Tanks: Soviet ISU-152
While the Soviets called their heavy guns self-propelled artillery, the Germans called them assault guns. In reality, the Soviets used them in both the direct fire support and tank-hunter role.
The heavy guns of the ISU-152 could be found supporting assaulting infantry with direct fire. Their ability to
instantly destroy bunkers, buildings, and defensive positions provided excellent infantry support.
The ISU-122 more often supported advancing Soviet tank battalions by providing overwatching fire. They would generally take up a position on the flanks of the tank formations and use their large guns to target enemy anti-tank guns, tank-hunters, and panzers.