The Japanese were an occupation force which used Vietnam (Indochina) as a staging point for airfields and launching a drive into India through Burma, etc. Japanese airplanes taking off from the future South Vietnam attacked and sank the British battleship Prince of Wales and the battlecruiser Repulse on 10 December 1941. Any underground systems that may have been constructed by the occupation forces would have been to support the above stated missions.
The Cu Chi tunnels are a large network of underground tunnels in Ho Chi Minh City (formerly Saigon). The tunnels were originally constructed from 1946-1954 as a hiding place for the Viet Minh, nationalist guerillas who fought the Japanese during World War 2 and then France. More tunnels were constructed during the Vietnam War to serve as hiding spots, communication, and supply routes for soldiers. The Cu Chi Minh tunnels are part of the overall network of tunnels that underlie much of Vietnam.
The Japanese occupied French Indochina (now separated into Vietnam, Laos & Cambodia) during the Second World War.
Napalm .
The Japanese were in Indochina...but they were surrendering to the allies...the French re-entered Vietnam (and Indochina) in 1945...the British were involved with Malaysia and those regions.
This question cannot accurately be answered; because not all of the tunnels were ever discovered. Probably not even today, 40 to 50 years after the war's been over. Tunnels were dug in North Vietnam to protect personnel from aerial bombing (air strikes); tunnels were dug in South Vietnam for the same reason, with the added reason of moving men & supplies AND storing supplies. Tunnels were dug in Laos and Cambodia for the same reasons explained for digging them in South Vietnam. MANY of those tunnels were destroyed by GIs by driving over them (crushing them/collapsing them) with their 13 ton M113 ACAVs (Armored Cavalry Assault Vehicles) or their M551 Sheridan Tanks (17 tons), or their M48 Patton tanks (52 tanks). Or an air strike was called in on them, to destroy them; or Engineers were called in the demo them.
The Cu Chi tunnels are a large network of underground tunnels in Ho Chi Minh City (formerly Saigon). The tunnels were originally constructed from 1946-1954 as a hiding place for the Viet Minh, nationalist guerillas who fought the Japanese during World War 2 and then France. More tunnels were constructed during the Vietnam War to serve as hiding spots, communication, and supply routes for soldiers. The Cu Chi Minh tunnels are part of the overall network of tunnels that underlie much of Vietnam.
The Cu Chi tunnels are a large network of underground tunnels in Ho Chi Minh City (formerly Saigon). The tunnels were originally constructed from 1946-1954 as a hiding place for the Viet Minh, nationalist guerillas who fought the Japanese during World War 2 and then France. More tunnels were constructed during the Vietnam War to serve as hiding spots, communication, and supply routes for soldiers. The Cu Chi Minh tunnels are part of the overall network of tunnels that underlie much of Vietnam.
the ants dig tunnels that rarely collaspe by spreading silk(from larvea), saliva and feces over tunnels dug with their jaws.
Vietnam
so they can start it from underground
Vietnam
The Japanese occupied French Indochina (now separated into Vietnam, Laos & Cambodia) during the Second World War.
Napalm .
See Communist Vietnam website.
The US supported Ho Chi Minh fight the Japanese in Vietnam as part of their war with Japan .
A tunnel rat in Vietnam refers to a soldier, typically from the U.S. or South Vietnamese forces, tasked with exploring and neutralizing the extensive network of tunnels used by the Viet Cong. These tunnels served as hiding places, storage for supplies, and bases for launching attacks. Tunnel rats faced significant dangers, including booby traps, enemy combatants, and the claustrophobic conditions within the tunnels. Their missions were critical in disrupting enemy operations and gaining intelligence during the Vietnam War.
Vietnam was a french and Japanese colony , that tried to gained independence .