Eberbach participated in the German Invasion of Poland in September 1939 and then in 1940 in the Battle of France. His unit supported General Hasso von Manteuffel's offensive across the Meuse River in May. Shortly after the start of Germany's invasion of the Soviet Union in June 1941, he was assigned as commander of the 5th Panzer Brigade in Leo Geyr von Schweppenburg's XXIV Panzer Corps.