Fort Missoula’s two large Mission-style barrack buildings, T-24 on the left and T-113 on the right, were built between 1906 and 1910 as two-and-a-half story concrete structures that could house up to two companies of soldiers. The earliest detainees to arrive at Fort Missoula as part of the Alien Detention Camp were housed in these buildings. Before the Alien Detention Camp era, Building T-24 was used as a recruitment center for World War II. During the Detention Camp period, the barracks provided separate living and dining spaces for Italian ship's officers. A ten-foot fence surrounded Building T-24 as well as land to the east that contained temporary wood-framed barrack buildings. In total, Fort Missoula could house as many as 2,000 internees, and its largest population, 2,003 people, was recorded on April 1, 1942. Today, these buildings are owned by the United States Forest Service.