Chelyabinsk ChTZ S-65 "Stalinez" A Chelyabinsk ChTZ S-65 "Stalinez" in German service, towing a Mercedes truck. The tractor, inspired by the US Caterpillar Sixty, was much better suited for the Russian muddy spring than anything the Germans could field. Eastern Europe Another photo of a ChTZ S-65 in German service (most likely the same as in the previous photograph), towing a long column of vehicles through the mud. Eastern Europe