The version that apeared in Kursk was the SU-152 or KV-14, this one was made based on the KV-1S chasis and had a more low altittude that make it more "tank hunter". It had success in Kursk because its gun, the ML-20 had good anti-tank capability against the 90° Tiger armor and against the vulnerable side of the slower Elephant.- Barbarossa Isegrim - wrote:
At Kursk it brought itself some fame - but it was more because the lacking capabilities of other Soviet AT weapons that were unable to deal with Tigers, Panthers and Ferdinands, and sometimes even the more avarage uparmored Panzers. At least the ISU/JSU-152 had some chance.
Ah, ISU/JSU is the same, the difference is Iosef or Josef