Camp Atterbury, near Edinburgh, Indiana, USA, is a training base of the Indiana National Guard. It was planned just months before the U.S. entry into World War II. Originally surveyed and researched by the Hurd Company, the present site was recommended to Congress in 1941. Construction commenced shortly after the attack on Pearl Harbor. More than 1,500 wood frame buildings were constructed, sized to hold more than one army infantry division. It also contained the 47-building, (concrete block, 2-story) Wakeman General and Convalescent Hospital, the largest hospital of its kind in the US in the 1940s. It was known for its progressive plastic eye replacements. During World War II, the U.S. 39th Evacuation Hospital, the 101st Infantry Battalion (Separate) and four U.S. Army infantry divisions, the 30th, 83rd, 92nd, and 106th, trained here.