The M3 Lee, officially Medium Tank, M3, was an American medium tank used during World War II. In Britain, the tank was called by two names based on the turret configuration and crew size. Tanks employing US pattern turrets were called the "Lee", named after Confederate general Robert E. Lee. Variants using British pattern turrets were known as "Grant", named after Union general Ulysses S. Grant. The last production (591 units), mostly fielded by the British army, was the M3A5, equipped with the twin GM 6-71 diesels, but with a riveted hull and Lee turret. Strangely, they were called “Grant II” in British service. Due to the many contractors involved, notably the cast turret foundries, these variants showed further variety in the shape of the hull, turret and details, notably due to different casting procedures.
