Can someone confirm this? More details?
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On February 7th of 1944, few remaining Panzer IV tanks from the 5th SS Panzer Division "Wiking" spearheaded the attempt to breakout from the Cherkassy Pocket against largely superior Soviet force. During the breakout, SS-Untersturmfuehrer Kurt Schumacher commanded two Panzer IVs, which counterattacked a Soviet tank company destroying in the process some 8 T-34 tanks. On the next day, Schumacher alone engaged another Soviet tank company and during both actions destroyed some 21 Soviet AFVs. For his achievement, he was awarded the Knight's Cross.
http://www.remy.neostrada.pl/miniatura/v4.htm