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Hiram Maxim invented the first self powered machine gun. It was called the Maxim Machine gun. It was used during World War One. It could fire 600 rounds per minute
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The first Zeppelin flew. These would be used in World War One. These were invented by Count Ferdinand von Zeppelin.
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They were used to shoot down aircrafts during World War One. This was big because durnig the first world war was fighting going on in the air. They were beginong to use them in late 1914.
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The tank was first used by the british in Worl War One. This was the fist time it was used in battle.