Battleships of World War 1 were used because they could be out in the sea and could still reach land with their weapons. Their only threats were submarines shooting torpedoes and planes that were dropping bombs.in 1884 hiram s. maxim was the first PERSON to invent the MINI GUN, they forced a change to trench warfare. In later wars, they helped change armies' tactics, moving the armies away from massed formations and into looser battle orders. |