The evolution of automatic weapons is one of the most significant developments in weapons history. While this development has been filled with disagreements, controversy, and stray hurdles, out of all of this tumult, shouting, and shooting has come the progress in firearms from the days when it was necessary to build a fire under a gun to make it go off to the you press the button and they do the work automatic firearms of the present day. In 1941, Melvin M. Johnson Jr. and Charles T. Haven, both well-established experts on firearms and ammunitions in their day, commemorated this development in Automatic Arms: Their History, Development and Use. The topics they illuminate the reader on include: History and developmentHow they workHow to keep them firingHow they may be employed in combatMiscellaneous considerations In the authors’ foreword, they state, There has been a great deal of general discussion about various automatic weapons pro and con, and naturally there have been misunderstandings and misinterpretations. They succeed immensely in their endeavor to clear up misunderstandings and misinterpretations with the clear, concise language they use in discussing this most notable of historical developments.