15cm sIG33 auf Pz Kpfw I Ausf B

During the Polish campaign, it was realised that the towed sIG33 guns were having difficulty keeping up with the motorised infantry and tanks. A solution was found by mounting the 15cm sIG33 complete with carriage and wheels on top of a Pz Kpfw I with the turret removed. An open topped fighting compartment was added although it offered little protection to the gunner let alone the exposed loaders. Lacking space, ammunition had to be carried by support vehicles.

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