Panzerkampfwagen IV Ausf. J (Sd.Kfz.161/2) with ‘Thoma’ schurzen skirts, put onto tanks for the same reason as the ‘bed-spring’ armor. They consisted of a complex angled channel stock, and then the steel-mesh would be affixed. These were retro fitted H’s in most cases, and they had to manually traverse the turret as the generator for electronic hyrdo-static were no longer available.