United States, 1941–1943 — Type: Medium Tank
Chassis: M3
Main Armament: 75 mm M2/M3 gun (sponson mount) + 37 mm M5/M6 turret gun
Armor: 13–51 mm
Engine: Wright R-975 radial, 340 hp
Crew: 6–7
Combat debut: 1942 (North Africa)
Notes: Two turret designs — “Lee” (US) and “Grant” (UK). Stopgap before the M4 Sherman.