In late 1940, it was reorganized as the 25th motorized infantry division and took part in Operation Barbarossa, the invasion of the Soviet Union, in June 1941. It was attached to Army Group Center and fought in the Soviet Union for two years before being reorganized as the 25th Panzergrenadier Division in June 1943. After another year of heavy fighting, the division was almost destroyed near Minsk during the Soviet Operation Bagration in the summer of 1944; the survivors were reorganized at the training area at Mielau (in modern-day Poland) as the 107th Panzer Brigade.