Whakakihia te rerenga e whai ake nei: I te marama o Mei 1941 i whakauruhia te Panzer Group 1 ki te Roopu Army a Field Marshal Gerd von Rundstedt ki te Tonga i te timatanga o te Operation Barbarossa. I te timatanga o Operation Barbarossa i te Pipiri 1941, Panzer Group 1 whakaurua te III, XIV me XLVIII Army Corps (motuhake) ki rima wehenga panzer me wha wehenga motokā (e rua o ratou SS) rite rawa ki 799 tanks. I mahi te Rōpū Panzer 1 i te rāngai tonga o te Rāwhiti ki te Rōpū Whero, ā, i uru atu ki te
Ko te Pakanga o Brody i uru atu ki te 3,000 o nga tanki a te ope Whero. Ko nga waahanga o te Rōpū i kati i te karapoti i nga ope Soviet e tata ana ki Uman me te tata ki Kiev. I muri i te hinganga o Kiev Panzer Group 1 i whakanuia hei 1st Panzer Army (i te Oketopa 6, 1941) me Kleist tonu i te whakahau. I mau te ope ki a Rostov, engari i akina kia hoki whakamuri i nga ra e waru i muri mai.