The dozen vehicles produced were assigned to the 90th Light Infantry Division in North Africa during the war.

The 15 cm sIG 33 (Sf) auf Panzerkampfwagen I Ausf B that had participated in the Invasion of France in 1940 had proven to be too heavy for its chassis as well as being enormously tall.

15-millimetre (0.6 in) plates formed the front and sides of the open-topped fighting compartment, which was also open at the rear.

Its sides were notably lower than the front, which made the crew vulnerable to small arms fire and shell fragments.

[2] The vehicle carried 30 rounds for the gun which could traverse a total of 5° left and right and used a Rblf36 sight.