Sturmgeschütz III
The armour of the M10 provided good protection against the 50 mm mounted on most German tanks and anti-tank guns. The M10 was first made available to the British in 1943. These vehicles were open-topped and mounted a 3-inch (76.2 mm) M7 American gun, which was significantly more powerful than the Ordnance QF 6 pounder that was mounted on British tanks of the period and was of equal power to the 7.5 cm KwK 40 used by the Panzer IV and Sturmgeschütz III.