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Burma Campaign

 

Burma campaign (1942-4). At the outbreak of WW II Burma was an agricultural country, exporting rice and teak, with an oilfield at Yenangyaung on the Irrawaddy and deposits of wolfram and rubies. It was racially and geographically diverse. The population was mainly Burman, with large Karen and Shan minorities and Chin, Kachin, and Naga hill tribes. Shut in by hills to north and east, Burma included jungle, a central plain around its second city Mandalay, alluvial deltas, and coastal swamps. It was watered by four rivers, from the east the Salween, forming the border with Thailand; the Sittang; and the mighty Irrawaddy, whose tributary, the Chindwin, marked the border with India. The British had become involved in Burma in 1824, and eventually annexed it after three wars (see Burma wars). They moved its capital to Rangoon, but until 1937 it was effectively controlled from India. There was a vigorous nationalist movement, some of whose members were in contact with the Japanese.

Japanese interest in Burma focused on the Burma road, which ran from Lashio in Burma to Kunming in China, and formed a source of supply to the Chinese, with whom they were at war. The British were badly overextended in the Far East, and Lt Gen Hutton, army commander in Burma, disposed of two inexperienced divisions, 17th Indian and 2nd Burma. In January 1942 the Japanese took the airfields in Tenasserim, in the far south, using them to provide air cover for their offensive. Moulmein fell, and the withdrawal of 17th Indian Division was disrupted when the Sittang bridge was blown on 23 February, with much of the division still on the far bank. Gen Wavell, British commander in the theatre, agreed with London's suggestion that Lt Gen Alexander should replace Hutton, and the commander of 17th Indian Division—brave, but tired and sick—was also relieved. An extra infantry brigade and 7th Armoured Brigade were shipped in.

None of this could stop the two confident and aggressive Japanese divisions. Rangoon fell, and the withdrawal of its garrison and elements of 17th Indian Division was only possible when the Japanese fortuitously removed a roadblock at Taukkyan, just north of the city. Lt Gen Slim arrived to command the force, now called Burcorps, and Chinese forces, co-ordinated by the Anglophobe US Lt Gen Stilwell, intervened to assist the British. Yet there was no stopping the retreat. The oil wells at Yenangyaung were blown in mid-April, and a month later Slim's survivors crossed the Chindwin after the longest retreat in British military history. It had cost them 13, 000 casualties compared with only 4, 000 Japanese. Tens of thousands of civilians had also made the appalling trek: some 500, 000 reached safety in India, but perhaps 50, 000 perished.

Some historians suggest that Burma was strategically irrelevant to the British, who could have held the borders of India with a token force as the Japanese, having cut the Burma road, had no wish to proceed further. Japanese intentions were unclear at the time, and Wavell, aware of the psychological impact of the loss of Burma—coming so soon after the fall of Malaya and Singapore—was determined to retake it. His first attempt, launched towards Akyab in the Arakan in December 1942, was an ignominious failure which highlighted poor British and Indian tactics and the low quality of many troops.

The Burma campaign, 1942-4. (Click to enlarge)
The Burma campaign, 1942-4.
(Click to enlarge)


But in February-May 1943 a weak brigade under Brig Orde Wingate, fighting in self-contained columns, crossed the Chindwin to strike at the Japanese lines of communication. The material damage done by the Chindits (from the Burmese word for the mythical beast that guards pagodas) was far less important than their moral effect. ‘If ordinary family men from Manchester and Liverpool can be trained for this specialised jungle war behind the enemy's lines, ’ wrote a correspondent, ‘then any fit man in the British army can be trained to do the same.’ This first Chindit expedition gave a powerful fillip to British morale, but it did encourage the Japanese commander in northern Burma, Lt Gen Mutaguchi, to press for authority to launch an offensive of his own. The Japanese had raised the Indian National Army (INA) from captured Indian troops who rallied to the call of the nationalist leader Subhas Chandra Bose, and Mutaguchi hoped to use a successful attack to launch the INA into India. In the meantime, the Allies restructured their own command, with Adm Lord Louis Mountbatten heading South-East Asia Command and Slim's force being designated Fourteenth Army. In January 1944 Mutaguchi received authority to launch his attack, U-GO. Slim knew that an offensive was coming, and decided to break it before mounting his own attack.

The Japanese began by attacking up into the Arakan to clear the left flank of their main thrust towards Imphal. This operation (HA-GO) went badly wrong. After an initial setback the British defended themselves doggedly on the ground, and quickly gained superiority in the air. The XV Corps administrative area—the ‘Admin Box’—was supplied by air when the Japanese encircled it. Slim wrote that the moral effect of this victory was ‘immense’. Mutaguchi's main assault, launched in March, followed the classical Japanese pattern of encirclement. Again it made initial progress, but was firmly checked at Imphal. The little hill station of Kohima, north of Imphal and on the road to the important railhead of Dimapur, was encircled, but held out in an epic siege. U-GO was cancelled in early July: it had cost the Japanese some 60, 000 casualties.

The Japanese offensive coincided with THURSDAY, the second Chindit expedition, in which Wingate, promoted to major general, commanded a much larger force, most of which was flown in by glider. Wingate was killed when his aircraft crashed, but his columns established strongholds which became centres of fierce battles. There was some friction between Wingate's successor and Stilwell, whose men were attacking towards Myitkyina, an operation which involved ‘Merrill's Marauders’, the only US ground troops to serve in Burma. The operation came to an end in August. It had had less overall impact than the first expedition, but the remarkable endurance displayed by so many of those involved deserves recognition. No less remarkable were the achievements of Force 136, widely deployed across the whole theatre, working with indigenous support to carry out sabotage.

The Allied offensive began in early December 1944. It comprised a Chinese advance on the left and a thrust into the Arakan on the right while, in the centre, Slim's two corps—IV and XXXIII—pressed south. At the appropriate moment an amphibious assault would be launched against Rangoon. Slim launched XXXIII and IV Corps against Mandalay and Meiktila respectively. Both towns were taken after hard fighting, and Slim's men advanced southwards. The Japanese abandoned Rangoon as the Allies approached, and most succeeded in escaping to the south-west. The Japanese command formally surrendered on 28 August 1945, on orders from Tokyo, though it proved difficult to notify survivors.

The war in Burma was marked by extreme difficulties caused by terrain, climate, and the prevalence of disease. The Japanese fought with extraordinary determination, and their treatment of prisoners still fuels deep resentment. The campaign has been hailed as the apotheosis of the old British-Indian army which, as Louis Allen observed, ‘fought its way brilliantly and with blitzkrieg-style panache into the capital of Burma’. If its strategic function was ambiguous, the war did at least, in Raymond Callahan's words, help the British ‘unlike the French, Dutch, or, later, the Americans, to leave Asia with some dignity. That, perhaps, is no small thing.’

Bibliography

  • Allen, Louis, Burma: The Longest War 1941-1945 (London, 1984).
  • Callahan, Raymond, Burma 1942-1945 (London, 1978).
  • Slim, FM Viscount, Defeat into Victory (London, 1956)

— Richard Holmes

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British History: Burma campaigns
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Burma campaigns (1941-5). These involved three issues. One commanded American support, the attempt to reopen the land route to nationalist-held China. The second involved guarding British- controlled India; the third the reconquest of lost British territories, particularly Malaya, rich in rubber and tin. In 1944 General Slim defeated a Japanese offensive and in 1945 Mountbatten's South-East Asia Command organized the reconquest of Burma.

Wikipedia: Burma Campaign
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Burma Campaign
Part of the Pacific War during World War II
Burma topo en.jpg
Geography of Burma
Date January 1942 - July 1945
Location Burma
Result Decisive Allied victory
Belligerents
 United Kingdom

Republic of China China
 United States

Empire of Japan Empire of Japan
AzadHindFlag.png Azad Hind (INA)
Burma Burma National Army
 Thailand
Commanders
United Kingdom Lord Louis Mountbatten
United Kingdom William Slim
Republic of China Wei Lihuang
Republic of China Sun Li-jen
United States Joseph Stilwell
Burma Aung San (from 1945)
Empire of Japan Shōjirō Iida
Empire of Japan Masakazu Kawabe
Empire of Japan Hyotaro Kimura
Empire of Japan Renya Mutaguchi
Thailand Jarun Rattanakuln Seriroengrit

AzadHindFlag.png Subhas C. Bose
Burma Aung San (until 1945)

Strength
United Kingdom 60,000
Republic of China 42,000 (1942)1; 100,000 (1944)2
Empire of Japan 316,700 (1944)[1]
Thailand 35,000
Casualties and losses
United Kingdom 71,244 killed and wounded[2] Empire of Japan 144,000 killed; possibly another 70,000 wounded. Total: ~200,000.3
1 Chinese Expeditionary Force in Burma.
2 The X Force and Y Force.
3 Japanese Army

The Burma Campaign in the South-East Asian Theatre of World War II was fought primarily between British Commonwealth, Chinese and United States forces against the forces of the Empire of Japan, Thailand, the Burmese Independence Army and the Indian National Army. British Commonwealth land forces were drawn primarily from the United Kingdom, British India and Africa.

The campaign had a number of notable features. The geographical characteristics of the region meant that factors like weather, disease and terrain had a major effect on operations. The lack of transport infrastructure placed an emphasis on military engineering and air transport to move and supply troops, and evacuate wounded. The campaign was also politically complex, with the British, Americans and Chinese all having different strategic priorities.

The climate of the region is dominated by the seasonal monsoon rains, which allowed effective campaigning for only just over half of each year. This, together with other factors such as famine and disorder in British India and the priority given by the Allies to the defeat of Nazi Germany, prolonged the campaign and divided it into four phases: the Japanese invasion which led to the expulsion of British, Indian and Chinese forces in 1942; failed attempts by the Allies to mount offensives into Burma, from late 1942 to early 1944; the Japanese invasion of India which ultimately failed following the battles of Imphal and Kohima; and, finally, the successful Allied offensive which reoccupied Burma from late-1944 to mid-1945.

Contents

Japanese conquest of Burma

Japanese objectives in Burma were initially limited to the capture of the capital and principal seaport of Rangoon. This would close the overland supply line to China and provide a strategic bulwark to defend Japanese gains in Malaya and the Dutch East Indies. The Japanese Fifteenth Army under Lieutenant General Shojiro Iida, initially consisting of only two infantry divisions, moved into northern Thailand (which had signed a treaty of friendship with Japan), and launched an attack over jungle-clad mountain ranges into the southern Burmese province of Tenasserim in January 1942.

The Japanese successfully attacked over the Kawkareik Pass, and captured the port of Moulmein at the mouth of the Salween River after overcoming stiff resistance. They then advanced northwards, outflanking successive British defensive positions. Troops of the 17th Indian Division tried to retreat over the Sittang River, but Japanese parties reached the vital bridge before they did. On 22 February, the bridge was demolished to prevent its capture, a decision that has since been extremely contentious.

The loss of two brigades of 17th Indian Division meant that Rangoon could not be defended. General Archibald Wavell, the commander-in-chief of the ABDA Command, nevertheless ordered Rangoon to be held as he was expecting substantial reinforcements from the Middle East. Although some units arrived, counterattacks failed and the new commander of Burma Army (General Harold Alexander), ordered the city to be evacuated on 7 March after its port and oil refinery had been destroyed. The remnants of Burma Army broke out to the north, narrowly escaping encirclement.

Japanese advance to the Indian frontier

After the fall of Rangoon, the Allies attempted to make a stand in the north of the country (Upper Burma), having been reinforced by a Chinese Expeditionary Force in Burma. The Japanese had also been reinforced by two divisions made available by the capture of Singapore, and defeated both the newly organised Burma Corps and the Chinese force. The Allies were also faced with growing numbers of Burmese insurgents and the civil administration broke down in the areas they still held. With their forces cut off from almost all sources of supply, the Allied commanders finally decided to evacuate their forces from Burma.

The retreat was conducted in very difficult circumstances. Starving refugees, disorganised stragglers, and the sick and wounded clogged the primitive roads and tracks leading to India. Burma Corps managed to make it most of the way to Imphal, in Manipur in India just before the monsoon broke in May 1942, having lost most of their equipment and transport. There, they found themselves living out in the open under torrential rains in extremely unhealthy circumstances. The army and civil authorities in India were very slow to respond to the needs of the troops and civilian refugees.

Due to lack of communication, when the British retreated from Burma, almost none of the Chinese knew about the retreat. Realising that they could not win without British support, some of the Chinese troops committed by Chiang Kai-shek made a hasty and disorganised retreat to India where they were put under the command of the American General Joseph Stilwell. After recuperating they were re-equipped and retrained by American instructors. The rest of the Chinese troops tried to return to Yunnan through remote mountainous forests and out of these at least half died.

Thai army enters Burma

A Thai military alliance with Japan had been signed on 21 December, 1941. Three Thai infantry and one cavalry division, spearheaded by armoured reconnaissance groups and supported by the air force, started their advance into Burma on 10 May, and engaged the retreating Chinese 93rd Division. Kengtung, the main objective, was captured on 27 May. Renewed offensives in June and November drove the Chinese back into Yunnan.

The boundary between the Japanese and Thai operations was generally the Salween. However, that area south of the Shan States known as Karenni States, the homeland of the Karens, was specifically retained under Japanese control.

Allied setbacks, 1942 - 1943

The Japanese did not renew their offensive after the monsoon ended. They installed a nominally independent Burmese government under Ba Maw, and reformed the Burma Independence Army on a more regular basis as the Burma National Army under Aung San. In practice, both government and army were strictly controlled by the Japanese authorities.

On the Allied side, operations in Burma over the remainder of 1942 and in 1943 were a study of military frustration. Britain could only maintain three active campaigns, and immediate offensives in both the Middle East and Far East proved impossible through lack of resources. The Middle East was accorded priority, being closer to home and in accordance with the "Germany First" policy in London and Washington.

The Allied build up was also hampered by the disordered state of Eastern India at the time. There were violent "Quit India" protests in Bengal and Bihar [3], which required large numbers of British troops to repress. There was also a disastrous famine in Bengal, which may have led to 3 million deaths through starvation, disease and exposure. In such conditions of chaos, it was difficult to improve the inadequate lines of communication to the front line in Assam or make use of local industries for the war effort. Efforts to improve the training of Allied troops took time and in forward areas poor morale and endemic disease combined to reduce the strength and effectiveness of the fighting units.

Nevertheless, the Allies mounted two operations during the 1942-1943 dry season. The first was a small offensive into the coastal Arakan region of Burma. The Indian "Eastern Army" intended to reoccupy the Mayu peninsula and Akyab Island, which had an important airfield. A division advanced to Donbaik, only a few miles from the end of the peninsula but was halted by a small but well entrenched Japanese force. At this stage of the war, the Allies lacked the means and tactical ability to overcome strongly constructed Japanese bunkers. Repeated British and Indian attacks failed with heavy casualties. Japanese reinforcements arrived from Central Burma and crossed rivers and mountain ranges which the Allies had declared to be impassable, to hit the Allies' exposed left flank and overrun several units. The exhausted British were unable to hold any defensive lines and were forced to abandon much equipment and fall back almost to the Indian frontier.

The second action was controversial. Under the command of Brigadier Orde Wingate, a long-range penetration unit known as the Chindits infiltrated through the Japanese front lines and marched deep into Burma, with the initial aim of cutting the main north-south railway in Burma in an operation codenamed Operation Longcloth. Some 3,000 men entered Burma in many columns. They damaged communications of the Japanese in northern Burma, cutting the railway for possibly two weeks but they suffered heavy casualties. Though the results were questioned the operation was used to propaganda effect, particularly to insist that British and Indian soldiers that they could live, move and fight as effectively as the Japanese in the jungle, doing much to restore morale among Allied troops.

The Balance Shifts 1943-1944

From December 1943 to November 1944 the strategic balance of the Burma campaign shifted decisively. Improvements in Allied leadership, training and logistics, together with greater firepower and growing Allied air superiority, gave Allied forces a confidence they had previously lacked. In the Arakan, XV Indian Corps withstood, and then broke, a Japanese counterstroke, while the Japanese invasion of India resulted in unbearably heavy losses and the ejection of the Japanese back beyond the Chindwin.

Allied plans

Lord Louis Mountbatten, Supreme Allied Commander, seen during his tour of the Arakan Front in February 1944.

In August 1943 the Allies created South East Asia Command (SEAC), a new combined command responsible for the South-East Asian Theatre, under Admiral Lord Louis Mountbatten. The training, equipment, health and morale of Allied troops under British Fourteenth Army under Lieutenant General William Slim was improving, as was the capacity of the lines of communication in North-eastern India. An innovation was the extensive use of aircraft to transport and supply troops.

SEAC had to accommodate several rival plans, many of which had to be dropped for lack of resources. Amphibious landings on the Andaman Islands (Operation "Pigstick") and in Arakan were abandoned when the landing craft assigned were recalled to Europe in preparation for the Normandy Landings.

The major effort was intended to be by American-trained Chinese troops of Northern Combat Area Command under General Joseph Stilwell, to cover the construction of the Ledo Road. Orde Wingate had controversially gained approval for a greatly expanded Chindit force, which was tasked with assisting Stilwell by disrupting the Japanese lines of supply to the northern front. Chiang Kai-shek had also agreed reluctantly to mount an offensive from the Yunnan.

Under British Fourteenth Army, XV Corps prepared to renew the advance in Arakan province, while IV Corps launched a tentative advance from Imphal in the centre of the long front to distract Japanese attention from the other offensives.

Japanese plans

Lieutenant General Kawabe

About the same time that SEAC was established, the Japanese created Burma Area Army under Lieutenant General Masakazu Kawabe, which took under command the Fifteenth Army and the newly-formed Twenty-Eighth Army.

The new commander of Fifteenth Army, Lieutenant General Renya Mutaguchi was keen to mount an offensive against India. Burma Area Army originally quashed this idea, but found that their superiors at Southern Expeditionary Army Group HQ in Singapore were keen on it. When the staff at Southern Expeditionary Army were persuaded that the plan was inherently risky, they in turn found that Imperial General Headquarters in Tokyo was in favour of Mutaguchi's plan.

The Japanese were influenced to an unknown degree by Subhas Chandra Bose, commander of the Indian National Army. This was composed largely of Indian soldiers who had been captured in Malaya or Singapore, and Indians (Tamils) living in Malaya. At Bose's instigation, a substantial contingent of the INA joined in this Chalo Delhi ("March on Delhi"). Both Bose and Mutaguchi emphasised the advantages which would be gained by a successful attack into India. With misgivings on the part of several of Mutaguchi's superiors and subordinates, Operation U-Go was launched.[4]

Northern and Yunnan front 1943/44

Stilwell's forces initially consisted of two American-equipped Chinese divisions with a Chinese-manned M3 Light Tank battalion and an American long-range penetration brigade known as "Merrill's Marauders".

In October 1943 the Chinese 38th Division (led by Sun Li-jen) began to advance from Ledo towards Myitkyina and Mogaung while American engineers and Indian labourers extended the Ledo Road behind them. The Japanese 18th Division was repeatedly outflanked by the Marauders and threatened with encirclement.

In Operation Thursday the Chindits were to support Stilwell by interdicting Japanese communications in the region of Indaw. A brigade began marching across the Patkai mountains on 5 February, 1944. In early March three other brigades were flown into landing zones behind Japanese lines by the USAAF 1st Air Commando Group and Royal Air Force and established defensive strongholds around Indaw.

Meanwhile, the Chinese forces on the Yunnan front mounted an attack starting in the second half of April, with nearly 40,000 troops crossing the Salween river on a 300 kilometres (190 mi) front. Soon some twelve Chinese divisions of 72,000 men, under General Wei Lihuang, were attacking the Japanese 56th Division. The Japanese forces in the North were now fighting on two fronts in northern Burma.

On 17 May, control of the Chindits passed from Slim to Stilwell. The Chindits now moved from the Japanese rear areas to new bases closer to Stilwell's front, and were given additional tasks for which they were not equipped. They achieved several objectives, but at the cost of heavy casualties. By the end of June, they had linked up with Stilwell's forces but were exhausted, and were withdrawn to India.

Also on 17 May, a force of two chinese regiments, Unit Galahad(Merrill's Marauders) and kachin guerilleros captured the airfield at Myitkyina.[5] The Allies did not immediately follow up this success and the Japanese were able to reinforce the town, which fell only after a siege which lasted until 3 August. The capture of Myitkyina airfield nevertheless immediately helped secure the air link from India to Chungking in China over the Hump.

By the end of May the Yunnan offensive, though hampered by the monsoon rains and lack of air support, succeeded in annihilating the garrison of Tengchung and eventually reached as far as Lungling. Strong Japanese reinforcements then counter-attacked and halted the Chinese advance.

Southern front 1943/44

In Arakan, Indian XV Corps under Lieutenant General Philip Christison renewed the advance on the Mayu peninsula. Ranges of steep hills channeled the advance into three attacks each by an Indian or West African division. The 5th Indian Infantry Division captured the small port of Maungdaw on 9 January, 1944. The Corps then prepared to capture two railway tunnels linking Maungdaw with the Kalapanzin valley but the Japanese struck first. A strong force from the Japanese 55th Division infiltrated Allied lines to attack the 7th Indian Infantry Division from the rear, overrunning the divisional HQ.

Sikhs of the 7th Indian Division at an observation post in the Ngakyedauk Pass, February 1944.

Unlike previous occasions on which this had happened, the Allied forces stood firm against the attack and supplies were dropped to them by parachute. In the Battle of the Admin Box from 5 February to 23 February, the Japanese concentrated on XV Corps' Administrative Area, defended mainly by line of communication troops but they were unable to deal with tanks supporting the defenders, while troops from 5th Indian Division broke through the Ngakyedauk Pass to relieve the defenders of the box. Although battle casualties were approximately equal, the result was a heavy Japanese defeat. Their infiltration and encirclement tactics had failed to panic Allied troops and as the Japanese were unable to capture enemy supplies, they starved.

Over the next few weeks, XV Corps' offensive ended as the Allies concentrated on the Central Front. After capturing the railway tunnels, XV Corps halted during the monsoon.

The Japanese Invasion of India 1944

Imphal and Kohima Campaign

IV Corps, under Lieutenant-General Geoffrey Scoones, had pushed forward two divisions to the Chindwin River. One division was in reserve at Imphal. There were indications that a major Japanese offensive was building. Slim and Scoones planned to withdraw and force the Japanese to fight with their logistics stretched beyond the limit. However, they misjudged the date on which the Japanese were to attack, and the strength they would use against some objectives.

The Japanese Fifteenth Army consisted of three infantry divisions and a brigade-sized detachment ("Yamamoto Force"), and initially a regiment from the Indian National Army. Mutaguchi, the Army commander, planned to cut off and destroy the forward divisions of IV Corps before capturing Imphal, while the Japanese 31st Division isolated Imphal by capturing Kohima. Mutaguchi intended to exploit the capture of Imphal by capturing the strategic city of Dimapur, in the Brahmaputra River valley. If this could be achieved, the lines of communication to General Stilwell's forces and the airbases used to supply the Chinese over the Hump would be cut.

The Japanese troops crossed the Chindwin River on 8 March. Scoones (and Slim) were slow to order their forward troops to withdraw and the 17th Indian Infantry Division was cut off at Tiddim. It fought its way back to Imphal with aid from Scoones's reserve division, supplied by parachute drops. North of Imphal, 50th Indian Parachute Brigade was defeated at Sangshak by a regiment from the Japanese 31st Division on its way to Kohima. Imphal was thus left vulnerable to an attack by the Japanese 15th Division from the north but because the diversionary attack launched by Japanese in Arakan had already been defeated, Slim was able to move the 5th Indian Division by air to the Central Front. Two brigades went to Imphal, the other went to Dimapur from where it sent a detachment to Kohima.

The scene on Scraggy Hill, captured by the 10th Gurkhas during the Battle of Imphal

By the end of the first week in April, IV Corps had concentrated in the Imphal plain. The Japanese launched several offensives during the month, which were repulsed. At the start of May, Slim and Scoones began a counter-offensive against the Japanese 15th Division north of Imphal. Progress was slow, as movement was made difficult by monsoon rains and IV Corps was short of supplies.

Also at the beginning of April, the Japanese 31st Division under Lieutenant-General Kotoku Sato reached Kohima. Instead of isolating the small British garrison there and pressing on with his main force to Dimapur, Sato chose to capture the hill station. The siege lasted from 5 April to 18 April, when the exhausted defenders were relieved. A new formation HQ, the Indian XXXIII Corps under Lieutenant-General Montagu Stopford, now took over operations on this front. The 2nd British Infantry Division began a counter-offensive and by 15 May, they had prised the Japanese off Kohima Ridge itself. After a pause during which more Allied reinforcements arrived, XXXIII Corps renewed its offensive.

By now, the Japanese were at the end of their endurance. Their troops (particularly 15th and 31st Divisions) were starving, and during the monsoon, disease rapidly spread among them. Lieutenant-General Sato had notified Mutaguchi that his division would withdraw from Kohima at the end of May if it were not supplied. In spite of orders to hold on, Sato did indeed retreat. The leading troops of IV Corps and XXXIII Corps met at Milestone 109 on the Dimapur-Imphal road on 22 June, and the siege of Imphal was raised.

View of the Garrison Hill battlefield, the key to the British defences at Kohima.

Mutaguchi (and Kawabe) continued to order renewed attacks. 33rd Division and Yamamoto Force made repeated efforts, but by the end of June they had suffered so many casualties both from battle and disease that they were unable to make any progress. The Imphal operation was finally broken off early in July, and the Japanese retreated painfully to the Chindwin River.

It was the largest defeat to that date in Japanese history. They had suffered 55,000 casualties, including 13,500 dead. Most of these losses were the result of disease, malnutrition and exhaustion. The Allies suffered 17,500 casualties. Mutaguchi had already relieved all his divisions' commanders; he was subsequently relieved of command himself.

During the monsoon from August to November, Fourteenth Army pursued the Japanese to the Chindwin River. While the 11th East Africa Division advanced down the Kabaw Valley from Tamu, the 5th Indian Division advanced along the mountainous Tiddim road. By the end of November, Kalewa had been recaptured, and several bridgeheads were established on the east bank of the Chindwin.

The Allied Reoccupation of Burma 1944-1945

The Allies launched a series of offensive operations into Burma during late 1944 and the first half of 1945. The command on the front was rearranged in November 1944. Eleventh Army Group HQ was replaced by Allied Land Forces South East Asia and NCAC and XV Corps were placed directly under this new headquarters. Although the Allies were still attempting to complete the Ledo Road, it was apparent that it would not materially affect the course of the war in China.

The Japanese also made major changes in their command. The most important was the replacement of General Kawabe at Burma Area Army by Hyotaro Kimura. Kimura threw Allied plans into confusion by refusing to fight at the Chindwin River. Recognising that most of his formations were weak and short of equipment, he withdrew his forces behind the Irrawaddy River, forcing the Allies to greatly extend their lines of communication.

Southern Front 1944/45

British troops in a landing craft make their way ashore on Ramree Island, 21 January 1945.

In Arakan, XV Corps resumed its advance on Akyab Island for the third year in succession. This time the Japanese were far weaker, and retreated before the steady Allied advance. They evacuated Akyab Island on 31 December, 1944. It was occupied by XV Corps without resistance two days later.

Landing craft had now reached the theatre, and XV Corps launched amphibious attacks on the Myebon Peninsula on 12 January, 1945, and at Kangaw ten days later, to cut off the retreating Japanese. There was severe fighting until the end of the month, in which the Japanese suffered heavy casualties.

An important objective for XV Corps was the capture of Ramree Island and Cheduba Island, to construct airfields which would support the Allies' operations in Central Burma. There was severe fighting on Ramree, in which most of the Japanese garrison died. XV Corps operations on the mainland were curtailed to release transport aircraft to support Fourteenth Army.

Northern Front 1944/45

NCAC resumed its advance late in 1944, although it was progressively weakened by the flyout of Chinese troops to the main front in China. On 10 December, 1944, the 36th British Infantry Division on NCAC's right flank made contact with units of Fourteenth Army near Indaw in Northern Burma. Five days later, Chinese troops on the command's left flank captured the city of Bhamo.

NCAC made contact with Chiang's Yunnan armies on 21 January, 1945, and the Ledo road could finally be completed, although by this point in the war its value was uncertain. Chiang ordered the American General Sultan, commanding NCAC, to halt his advance at Lashio, which was captured on 7 March. This was a blow to British plans as it endangered the prospects of reaching Rangoon before the onset of the monsoon, expected at the beginning of May. Winston Churchill, British Prime Minister, appealed directly to American chief of staff George Marshall for the transport aircraft which had been assigned to NCAC to remain in Burma.[6] From 1 April, NCAC's operations stopped, and its units returned to China and India. A US-led guerrilla force, OSS Detachment 101, took over the remaining military responsibilities of NCAC.

Central Front 1944/45

Fourteenth Army, now consisting of IV Corps and XXXIII Corps, made the main offensive effort into Burma. Although the Japanese retreat over the Irrawaddy forced the Allies to completely change their plans, such was the Allies' material superiority particularly in logistics that this was done. IV Corps was switched in secret from the right to the left flank of the army and aimed to cross the Irrawaddy near Pakokku and seize the Japanese line-of-communication centre of Meiktila, while XXXIII Corps continued to advance on Mandalay.

Sherman tanks and trucks of 63rd Motorised Brigade advancing on Meiktila, March 1945.

During January and February, 1945, XXXIII Corps seized crossings over the Irrawaddy River near Mandalay. There was heavy fighting, which attracted Japanese reserves and fixed their attention. Late in February the 7th Indian Division leading IV Corps, seized crossings at Nyaungu near Pakokku. 17th Indian Division and 255th Indian Armoured Brigade followed them across and struck for Meiktila. In the open terrain of Central Burma, this force outmanoeuvered the Japanese and fell on Meiktila on 1 March. The town was captured in four days, despite resistance to the last man.

The Japanese tried first to relieve the garrison at Meiktila and then to recapture the town and destroy its defenders. Their attacks were not properly coordinated and were repulsed. By the end of March the Japanese had suffered heavy casualties and lost most of their artillery, their chief anti-tank weapon. They broke off the attack and retreated to Pyawbwe.

XXXIII Corps had renewed its attack on Mandalay. It fell to 19th Indian Division on 20 March, though the Japanese held the former citadel which the British called Fort Dufferin for another week. Much of the historically and culturally significant portions of Mandalay were burned to the ground.

Race for Rangoon

A Stuart light tank of an Indian cavalry regiment during the advance on Rangoon, April 1945

Though the Allied force had advanced successfully into central Burma, it was vital to capture the port of Rangoon before the monsoon to avoid a logistic crisis. In the spring of 1945, the other factor in the race for Rangoon was the years of preparation by the liaison organisation, Force 136, which resulted in a national uprising within Burma and the defection of the entire Burma National Army to the allied side. In addition to the allied advance, the Japanese now faced open rebellion behind their lines.

XXXIII Corps mounted Fourteenth Army's secondary drive down the Irrawaddy River valley against stiff resistance from the Japanese Twenty-Eighth Army. IV Corps made the main attack, down the "Railway Valley", which was also followed by the Sittang River. They began by striking at a Japanese delaying position (held by the remnants of the Japanese Thirty-Third Army) at Pyawbwe. The attackers were initially halted by a strong defensive position behind a dry chaung, but a flanking move by tanks and mechanized infantry struck the Japanese from the rear and shattered them.

From this point, the advance down the main road to Rangoon faced little organised opposition. An uprising by Karen guerillas prevented troops from the reorganised Japanese Fifteenth Army reaching the major road centre of Toungoo before IV Corps captured it. The leading Allied troops met Japanese rearguards north of Pegu, 40 miles (64 km) north of Rangoon, on 25 April. Kimura had formed the various service troops, naval personnel and even Japanese civilians in Rangoon into the 105 Independent Mixed Brigade. This scratch formation held up the British advance until April 30 and covered the evacuation of the Rangoon area.

Operation Dracula

The original conception of the plan to re-take Burma had envisioned XV Corps making an amphibious assault on Rangoon well before Fourteenth Army reached the capital, in order to ease supply problems. This operation, codenamed Operation Dracula, was postponed several times as the necessary landing craft were retained in Europe and finally dropped in favour of an attack on Phuket Island, off the west coast of Thailand.

Slim feared that the Japanese would defend Rangoon to the last man through the monsoon, which would put Fourteenth Army in a disastrous supply situation. He therefore asked for Operation Dracula to be re-mounted at short notice. The naval forces for the attack on Phuket were diverted to Operation Dracula, and units of XV Corps were embarked from Akyab and Ramree.

On 1 May, a Gurkha parachute battalion was dropped on Elephant Point, and cleared Japanese rearguards from the mouth of the Rangoon River. The 26th Indian Infantry Division landed by ship the next day. When they arrived they discovered that Kimura had ordered Rangoon to be evacuated, starting on 22 April. After the Japanese withdrawal, Rangoon had experienced an orgy of looting and lawlessness similar to the last days of the British in the city in 1942. On the afternoon of 2 May, 1945 the monsoon rains began in full force. The Allied drive to liberate Rangoon before the rains had succeeded with only a few hours to spare.

The leading troops of the 17th and 26th Indian divisions met at Hlegu, 28 miles (45 km) north of Rangoon, on 6 May.

Final operations

Following the capture of Rangoon, a new Twelfth Army headquarters was created from XXXIII Corps HQ to take control of the formations which were to remain in Burma.

The Japanese Twenty-Eighth Army, after withdrawing from Arakan and resisting XXXIII Corps in the Irrawaddy valley, had retreated into the Pegu Yomas, a range of low jungle-covered hills between the Irrawaddy and Sittang rivers. They planned to break out and rejoin Burma Area Army. To cover this breakout, Kimura ordered Thirty-Third Army to mount a diversionary offensive across the Sittang, although the entire army could muster the strength of barely a regiment. On 3 July, they attacked British positions in the "Sittang Bend". On 10 July, after a battle for country which was almost entirely flooded, both the Japanese and the Allies withdrew.

The Japanese had attacked too early. Sakurai's Twenty-Eighth Army was not ready to start the breakout until 17 July. The breakout was a disaster. The British had placed ambushes or artillery concentrations on the routes the Japanese were to use. Hundreds of men drowned trying to cross the swollen Sittang on improvised bamboo floats and rafts. Burmese guerillas and bandits killed stragglers east of the river. The breakout cost the Japanese nearly 10,000 men, half the strength of Twenty-Eighth Army. British and Indian casualties were minimal.

Fourteenth Army (now under Lieutenant General Miles Dempsey) and XV Corps had returned to India to plan the next stage of the campaign to re-take south east Asia. A new corps, the Indian XXXIV Corps, under Lieutenant-General Ouvry Lindfield Roberts was raised and assigned to Fourteenth Army for further operations.

This was to be an amphibious assault on the western side of Malaya codenamed Operation Zipper. The dropping of the atomic bombs forestalled this operation, but the operation was undertaken post-war as the quickest way of getting occupation troops into Malaya.

Results

The military and political results of the Burma campaign have been contentious, on the Allied side. In military terms, the Japanese retained control of Burma until the result of the campaign was irrelevant to the fate of Japan itself. However, the attempted Japanese invasion of India in 1944 was launched on unrealistic premises, and resulted in the largest defeat the Japanese armies had suffered to that date.

On the Allied side, the recovery of Burma was reckoned a major triumph for the British Indian Army. However, it was recognised by many contemporary authorities and later historians that the campaign was a "sideshow", and (apart from distracting some Japanese land forces from China or the Pacific) did not contribute to the overall defeat of Japan. Although Burma was reconquered, a combination of the pre-war agitation among the Burman population for independence, the economic ruin of Burma during the four years' campaign and the military and political humiliation of the British far eastern empire during the Japanese invasions made it impossible for the former regime to be resumed. Within three years of the end of the war, both Burma and India had achieved independence.

The American historian Raymond Callahan concluded "Slim's great victory ... helped the British, unlike the French, Dutch or, later, the Americans, to leave Asia with some dignity".[7]

The Americans' own goals in Burma had consistently been to aid the Nationalist Chinese regime. Apart from the "Hump" airlift, these bore no fruit until so near the end of the war that they made little contribution to the defeat of Japan. These efforts have also been criticised as fruitless because of the self-interest and corruption of Chiang Kai-Shek's regime.

See also

Notes

  1. ^ Allen, Burma: The Longest War, p.662
  2. ^ Allen, Burma: The Longest War, p.638. Minimum of 6,665 dead, but not all fatalities recorded
  3. ^ Bayly and Harper (2005) Forgotten Armies: Britain's Asian Empire and the War with Japan (London: Penguin Books)pp.247-249
  4. ^ Allen, Burma: the Longest Campaign, pp. 157-170
  5. ^ Allen, Burma: The Longest War, pp. 364-365
  6. ^ Churchill (1954), Chapter 18.
  7. ^ Callahan, Raymond (1978). Burma 1942-1945: The Politics And Strategy Of The Second World War. Davis-Poynter. ISBN 978-0706702187. 

References

  • Allen, Louis Burma: The Longest War
  • Bayly, Christopher & Harper, Tim. Forgotten Armies
  • Carew, Tim. The Longest Retreat
  • Calvert, Mike. Fighting Mad has content related to the 1944 Chindit campaign
  • Churchill, Winston (1954). The Second World War. Volume 6: Triumph and Tragedy. London: Cassel. OCLC 312199790. 
  • Dillon, Terence. Rangoon to Kohima
  • Drea, Edward J. (1998). "An Allied Interpretation of the Pacific War". In the Service of the Emperor: Essays on the Imperial Japanese Army. Nebraska: University of Nebraska Press. ISBN 0-8032-1708-0. 
  • Fujino, Hideo. Singapore and Burma
  • Grant, Ian Lyall & Tamayama, Kazuo Burma 1942: The Japanese Invasion
  • Ida, Shojiro From the Battlefields
  • Ikuhiko Hata Road to the Pacific War
  • Hastings, Max (2007). Nemesis. Harper Press. ISBN 978-0007219827. 
  • Hickey, Michael. The Unforgettable Army
  • Hodsun, J.L. War in the Sun
  • Jackson, Ashley (2006). The British Empire and the Second World War. London: Hambledon Continuum. pp. 387–388. ISBN 978-1-85285-517-8. 
  • Keegan (ed), John; Duncan Anderson (1991). Churchill's Generals. London: Cassell Military. pp. 243–255. ISBN 0-304-36712-5. 
  • Latimer, Jon. Burma: The Forgotten War
  • Moser, Don and editors of Time-Life Books World War II: China-Burma-India',1978, Library of Congress no 77-93742
  • Slim, William (1956) Defeat Into Victory. Citations from the Cassell 1956 edition, but also available from NY: Buccaneer Books ISBN 1-56849-077-1, Cooper Square Press ISBN 0-8154-1022-0; London: Cassell ISBN 0-304-29114-5, Pan ISBN 0-330-39066-X.
  • Ochi, Harumi. Struggle in Burma
  • Reynolds, E. Bruce. Thailand and Japan's Southern Advance
  • Rolo, Charles J. Wingate's Raiders
  • Sadayoshi Shigematsu Fighting Around Burma
  • Smyth John Before the Dawn
  • Sugita, Saiichi. Burma Operations
  • Thompson, Robert. Make for the Hills has content related to the 1944 Chindit campaign
  • Webster, Donovan. The Burma Road : The Epic Story of the China-Burma-India Theater in World War II
  • Young, Edward M. Aerial Nationalism: A History of Aviation in Thailand

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