Soldiers of the German XIX Motorised Corps entering the Brześć Litewski (Brest Litovsk) fortress after 3 days of heavy fighting. Photograph probably taken on 17 September 1939, the day of the Soviet invasion of Poland. Both invading armies held a joint victory parade at the fortress five days later.
Over two million American servicemen passed through Britain during the Second World War. In 1944, at the height of activity, up to half a million were based there with the United States Army Air Forces (USAAF). Their job was to man and maintain the vast fleets of aircraft needed to attack German cities and industry.