Unit Tanks on September 1, 1939[6] (Invasion of Poland) Tanks on June 22, 1941[7] (Invasion of the USSR) 1st Panzer Division 309 145 2nd Panzer Division 322 N/Aa 3rd Panzer Division 391 215 4th Panzer Division 341 166 5th Panzer Division 335 N/Ab 10th Panzer Division 150 182 Panzer Division Kempf 164 N/Ae 1st Light Division / 6th Panzer Division 226 245d 2nd Light Division / 7th Panzer Division 85 265d 3rd Light Division / 8th Panzer Division 80 212d 4th Light Division / 9th Panzer Division 62 143d Panzer Regiment 25 225 N/Ae 11th Panzer Division N/Ac 143 12th Panzer Division N/Ac 293 13th Panzer Division N/Ac 149 14th Panzer Division N/Ac 147 16th Panzer Division N/Ac 146 17th Panzer Division N/Ac 202 18th Panzer Division N/Ac 218 19th Panzer Division N/Ac 228 20th Panzer Division N/Ac 229 a Did not participate in Operation Barbarossa, transport ships sunk while carrying the Division (1941).[8] b Arrived on the Eastern Front after Operation Barbarossa. c Formed after the Polish Campaign. d Renamed following the Polish Campaign. e Merged into other Divisions following the Polish Campaign.