As wartime labour was short, it was proposed to make use of Italian and German prisoners of war. Construction at the site was begun in January 1943, commencing with housing for the WES personnel needed to direct work on the model, as well as an internment camp for 3,000 men at nearby Camp Clinton. The first POW's (200 of Rommel's Afrika Korps) arrived in August 1943, and by December, there were almost 1800. Enlisted men received 90 cents for 8 hours labor. Officers and non-commissioned officers were not required to work, but could volunteer. By May 1946, the last of the prisoners had been repatriated, and the site was almost ready for model construction.