The Medium Tank M3 was an American tank used during World War II.
The tank is easily identified by its peculiar design, with the main 75mm gun in a casemate sponson on the right side of the hull, and a smaller turret atop the hull mounting a 37mm gun.
The British outfitted some M3 tanks with British-pattern turrets, visually identified by their top turrets looking "flatter" compared to United States models. In accordance with British practice to name their Lend-Lease tanks after generals from the American Civil War, tanks with the taller, American-made turrets were named for Robert E. Lee, while those with the smaller, British-made turrets were named for Ulysses S. Grant.
