The machine gun is a formidable battlefield element that can be used from the ground, on planes, and on naval ships. The initial design of the gun was water cooled and belt fed. The gun could fire up to 600 rounds per minute. Rapid and continueous fire was allowed by the explosion of powder in each gun cartridge. The machine gun was invented by Hiram Maxim and were introduced in World War one. The gun was invented to be used as a weapon of war that allowed armies to eliminate there enemies quickly and in larger amounts.