The Vickers machine gun was the primary machine gun they used in WWI.
The main guns for the british I believe were Maxims, dont know about the germans.
Trenches were the soldiers main protection from machine guns and artillery, but the British and United States alsong with other countries had special helmets to protect their heads from artillery.
machine guns
Poison gas, tanks, flamethrowers and machine guns was introduced in World War 1.The main causes of WW1 is Nationalism, Imperialism, Alliances, and Militarism.
Tanks use cannons; and aircraft use machine guns or automatic cannons (small caliber such as 20mm, 30mm, etc). Tank cannons are called "main guns." During the Vietnam War, the US Patton tanks fired 90mm main guns; while the Australian Centurion tanks fired 84mm guns.
In the Battle of Tunisia during World War II, the main weapons used included tanks, artillery, and small arms. The Allies utilized Sherman tanks and British Crusader tanks, while Axis forces relied on German Panzer III and IV tanks. Artillery, including howitzers and anti-tank guns, played a crucial role in both offensive and defensive operations. Infantry units were equipped with rifles, machine guns, and mortars to support ground engagements.
Shooting people. That's a misleading answer. At one time, the Tommy gun was popular among gangsters. Now days, it's uncommon for a machine gun to be used in a crime. Machine guns today are mostly used by target shooters and collectors.
The BREN light machine gun and the STEN sub-machine gun were both extremely famous British weapons. It would be hard to choose. The STEN was widely used by resistance forces throughout Europe because is was cheap and easy to make. The BREN was the main main battle weapon of the regular army on the tactical squad (section) level.
because commanders would tell there soldiers to charge and the germans had the first machine guns so when the friendlies would chrge they would get hosed down by the enemy
The main rifle used by the American forces was the 1906 Springfield 30-06.
Two: Hand guns and Long guns
Without the machine gun in WWI, it would have been very different. Machine guns were used very much in WWI. They were used to mow down soldiers that were trying to rush the trenches, and so they were very effective for defending the trench from oncoming soldiers. Without the machine gun, bolt action rifles and bayonets, along with Mills bombs would have been the main weapons. Bolt action rifles are much slower to shoot than machine guns, and therefore trenches would have been conquered much more easily.