From the Annals of the U.S. Army – In 1942, Camp Hood near Killeen was activated as a temporary camp in preparation for active operations in World War II. The temporary camp, was named for Confederate general John Bell Hood. The Army initially acquired about 180,000 acres, and it was estimated that the camp would cost $22.8 million for the land, facilities, and development of utilities. The date of completion was set for 15 August 1942. Almost 300 families were displaced by the acquisition. The communities of Clear Creek, Elijah and Antelope were demolished during construction. The base was designed with large open spaces for the training of mobile anti-tank units to be deployed in Europe and elsewhere.
Fort Hood is now one of the largest military installations in the world in terms of size and the number of Army and civilian personnel stationed at the site. Fort Hood had a total population of 53,416 as of the 2010 U.S. Census making it the most populous U.S> military installation in the world. Fort Hood covers 214,000 acres making it one of the largest military bases in the world by area.