Rubuta ci gaba don wannan sakin layi - A watan Mayu 1941 an haɗa Panzer Group 1 zuwa Field Marshal Gerd von Rundstedt's Army Group Kudu a farkon Operation Barbarossa. A farkon Operation Barbarossa a watan Yunin 1941, Panzer Group 1 ya hada da III, XIV da XLVIII Army Corps (motorized) tare da bangarorin panzer guda biyar da bangarorin motoci guda hudu (biyu daga cikinsu SS) sanye take da tankuna 799. Panzer Group 1 ya yi aiki a kudancin yankin Gabas ta Gabas da Red Army kuma ya shiga cikin yakin Brody.
wanda ya hada da tankokin Red Army 3,000. Rukunin Rukunin sun rufe kewaye da sojojin Soviet a kusa da Uman da kusa da Kiev. Bayan faduwar Kiev Panzer Group 1 an fadada shi ya zama rundunar sojojin Panzer ta 1 (a ranar 6 ga Oktoba, 1941) tare da Kleist har yanzu a cikin umarni. Sojojin sun kama Rostov, amma an tilasta masa komawa bayan kwana takwas.