The Rheinwiesenlager (German: [ˈʁaɪnˌviːzn̩ˌlaːɡɐ], Rhine meadow camps) were a group of 19 camps built in the Allied-occupied part of Germany by the U.S. Army to hold captured German soldiers at the close of the Second World War. Officially named Prisoner of War Temporary Enclosures (PWTE), they held between one and almost two million surrendered Wehrmacht personnel from April until September 1945.