The need for prisoner of war camps in the United States increased as World War II progressed. In particular, United States military officials believed that some of the prisoners were in possession of
information of strategic value to the war effort. Officials in the intelligence organizations of the United States War Department perceived that the remoteness of facilities at Pine Grove Furnace provided security advantages while retaining the advantage of proximity to decision-makers in Washington, DC. The guards at Pine Grove Furnace POW Interrogation Camp were usually soldiers who had been wounded in combat but continued their duty by serving as POW prison guards. Initially, the prisoners at the Pine Grove Furnace POW Interrogation Camp were from the
German Afrika Korps and from the
German U-Boat corps. The prison population expanded during its service and eventually included a small number of Japanese Prisoners of War. Treatment of the prisoners of war at the Pine Grove Furnace POW Interrogation Camp was reported to be consistent with the mandates of the
1929 Geneva Convention. Prisoners had suitable personal space, diet, and recreation opportunities. During their time at the Pine Grove Furnace POW Interrogation Camp, prisoners carried out various tasks consistent with the camp's security concerns. Their tasks extended to various artworks, and several of the prisoners artworks remain on display by the Cumberland County Historical Society. At least one of the prisoners, Heinrich Backhaus, became a professional artist. The camp officially closed as a prisoner of war facility on 28 November 1948. At that time, the camp was returned to the Commonwealth of Pennsylvania, as part of the Michaux State Forest. Approximately 7500 German prisoners of war passed through the Pine Grove Furnace Prisoner of War Interrogation Camp and approximately 161 Japanese prisoners of war. ==Camp Michaux==