Comparing: Pz.Kpfw. IV Schmalturm vs. Sherman Firefly

In November 1944 the Krupp company presented several avant-projects aimed to upgrade armament of tanks and tank destroyers in service. Among them there was a project of mounting a Panther's Schmalturm (tight turret) on the Pz IV Ausf. J. The project was canceled due to phasing out the Pz IV production.

A British version of the American M4 Sherman tank, developed in early 1944. It differed from the U.S. version by having a more powerful 17-pounder gun, different placement of the radio and ammunition, no bow gun, and no driver's assistant position. Between 2,100 and 2,300 vehicles of all modifications were built from 1944 through 1945.