a destroyed 3.7 cm PaK 36 auf T-20(r), source: Flickr.com with permission of the publishing user, edited

On the Eastern Front, the Germans captured large numbers of the small artillery tractor known as the T-20, also referred to by its Soviet designation Komsomolec. The Germans employed these vehicles primarily for their original purpose — towing various weapons and loads. A smaller number, however, were converted into light tank destroyers and designated 3,7cm PaK 36 auf T-20 (r).

The running gear consisted of four spoked road wheels on each side, suspended and sprung in pairs. The rear idler wheel was of the same spoked design as the road wheels but mounted at a higher level. At the very front was the drive sprocket, featuring four circular lightening holes. Two return rollers supported the upper run of the track.

3.7 cm PaK 36 auf T-20(r), source: Flickr.com with permission of the publishing user, edited

Little effort was spent on the installation of the anti-tank gun. It was simply bolted, shield and all, directly to the top of the crew compartment without any further modifications. The original gun shield was, however, widened on the sides and extended slightly rearward to improve protection for the crew operating it — though even so, the level of protection remained minimal.

In addition to the gun, the vehicle retained the hull machine gun inherited along with the captured chassis. Unfortunately, no details are known about the vehicle's combat deployment or the number of conversions carried out.