Probalby the Panzergrenadier-Division "Grosseutschland".
Vehicle used as a transport of ammunition for Stug III Ausf.A to E batteries.
70 rounds for 75 mm StuK 37 L/24 in 35 cases.

11.Panzerdivision - Russia, Central Sector (10/1941-06/1942).
Vehicle used as a transport of ammunition for Stug III Ausf.F to G batteries.
60 rounds for 75 mm StuK 40 L/48 in individual cases