The M-108 self-propelled artillery was introduced, inside early '60s, to fulfill a particular need of U.S. Army: develop a top mobility howitzer able to replace the the aging process M52. The M-108 mobility, achieved thanks to the effective diesel turbocharged 8-cylinders engine and also to the efficient suspension system, had been its primary energy. The armament ended up being created by the 105 mm howitzer by one 12.7 mm machine gun, fitted to the rooftop, for close defense purposes. The perfect solution is considering 105 mm howitzer as main weapon, but had not been therefore effective. U.S. Army decided in reality very soon to consider larger caliber howitzers characterized by more effectiveness. The M-108 was used throughout the Vietnam War however it was gradually flanked after which changed by self-propelled 155 mm. and 203 mm. artilleries.