In 1945 this M24 was tested using six .50cal Machine Guns in a combination known as "Multiple Caliber .50 Gun Motor Carriage T77". When tested with a computing sight it was known as the T77E1. Built by the United Shoe Machinery Corporation, it was intended to be an anti-aircraft weapon. The open top on the turret was home to a two man gun crew. The T77 weighed about 38,000 ready for combat. Other than the armament, the vehicle was identical to the standard M24 light tank.

Multiple Caliber .50 Gun Motor Carriage T77

A 1st Armord Div. M4A1 in Tunisia, 1943; texag57



Desert War

40mm guns were among the most widely used by the United States between 1940 and 1946. The reason for their popularity was due to weapon weight and the delivery power of their shot. Shown above is a Bofors gun on a modified M3 tank chassis. This unaccepted for production model is dated at 1942 and the picture was taken at Aberdeen Proving Ground. The fire control system included a T10 computer which was a gear operated device which provided data for gun tracking.