The 15cm s.I.G. Gw 38(t)also known as Bison was a self propelled artillery vehicle , 90 of which were used by the germans between 1943 and 1945. The vehicle was manned by a crew of 5 and was 2.15 metres wide, 4.69 metres long, 2.19 metres high and weighed 11.5 tonnes. Powered by a 125hp petrol engine the 15cm s.I.G. Gw 38(t) was capable of a road speed of 25mph and a cross country speed of 15mph. The 15cm s.I.G. Gw 38(t) had a road range of 115 miles Based on the czech 38t chassis, the vehicle was armed with 1 light machine gun, a 15cm sIG33 L/11 with a muzzle velocity of 280m/sec which was capable of penetrating 40mm of armour at 800metres