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Trench warfare is a specific type of combat, where the two opposing sides are shooting from trenches, facing each-other.

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While trenches were easily made, they weren't perfect. Trenches were typically unhygienic due to lack of running water. Disease was spread easily in trenches and they were often cold and wet. Trenches also were not very secretive, as it was easy to spot a soldier entering and exiting the trench.

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Tanks, created in 1915 were originally called landships, but later were called tanks because of their similarities to water tanks. Tanks were created to be a “mobile death machine” to destroy enemies, while somebody was operating from the inside of the tank, shooting at the enemy from a large gun on the top. However, the tank ended up being more deadly for its inhabitants as the technology was rushed and dangerous.

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The machine gun, created 30 years before WW1 but not commonly used, was another result of WW1. It was created to shorten the time between each shot taken. Soldiers were able to shoot up to 600 rounds a minute. However, it did take quite a few people to operate one machine gun because of its weight. Early models of the machine gun easily overheated and were unreliable due to often jams.

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The most commonly used poison gas during WW1 was Mustard Gas, a yellow colored, horseradish smelling gas that could permanently damage the skin and lungs. Some soldiers were killed by the gas. People who had been exposed to this gas are at higher risk of developing cancer later on.

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A stalemate is a situation where neither side is winning or can win. When a stalemate would occur, soldiers found more creative ways to get results. Such as; shooting into the trenches, gassing the trenches and bombing the trenches.

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When US soldiers arrived in the war, the allied forces felt a strong morale boost due to the American military’s numbers.

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Many soldiers died during aircraft training for the war. Those who survived training helped change the battles by supporting infantry and artillery.

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Returning soldiers faced many mental and physical struggles such as depression, ptsd, lingering injuries from combat and unemployment.