Cadillac, formally the Cadillac Motor Car Division, is a division of the U.S.-based General Motors (GM) that markets luxury vehicles worldwide.
The M2 Machine Gun or Browning.50 Caliber Machine Gun is a heavy machine gun designed toward the end of World War I by John Browning.
A prototype is an early sample, model, or release of a product built to test a concept or process or to act as a thing to be replicated or learned from.
A tank destroyer or tank hunter is a type of armoured fighting vehicle, armed with a direct-fire artillery gun or missile launcher, with limited operational capacities and designed specifically to engage enemy tanks.
The United States Army (USA) is the land warfare service branch of the United States Armed Forces.
The 3-inch M1918 gun was a United States 3-inch anti-aircraft gun that entered service in 1918 and served until it was finally superseded by the 3" M3 gun in 1930.