The M36 replaced the M10 due to its inferior 76mm weapon. The much-improved M36 wielded a 90mm gun and featured an armor-piercing capability. This was a crucial change when confronting German Panthers and Tigers during the 1944 Battle of the Bulge. The M36 used M10A1 hulls, and later the M36B2 was produced using the M26 turret and the hull of an M4A2 and its diesel engine for better performance. Service life for these tanks was quite extensive and used by other nations following the war.
