Over 3,000 V-2s were used by the German Wehrmacht against Allied targets in World War II , resulting in the death of an estimated 7,250 military personnel and civilians . Over 3,000 V-2s were launched as military rockets by the German Wehrmacht against Allied targets during the war , mostly London and later Antwerp . The attacks resulted in the death of an estimated 7,250 military personnel and civilians , while 12,000 forced laborers were killed at the production of the weapons .