Includes one 15cm sIG33 auf Panzer II
The Bison has a 15cm sIG33 (L/12) infantry gun mounted on a highly modified Panzer II chassis. The Panzer II chassis was both widened, lengthened and an extra roadwheel added. The destructive power of the 15cm round of the sIG 33 was greatly appreciated, but due to the short range and poor mobility of the towed gun, it rarely got into action during attacks.
The first self-propelled version was the 15cm sIG 33 (Sfl) auf Pz.Kpfw I and saw combat in May 1940.