They do spread out. Four places come to mind...
Ft. Hood, Texas
Ft. Bliss, Texas and New Mexico
Ft. Knox, Kentucky
Ft. Benning, Georgia
Along with III Corps, Ft Hood, Texas, 69th Air Defense Artillery Brigade, Ft Hood, Texas, Air Defense Artillery School and School of Fire for the Field Artillery, Ft. Sill Oklahoma, 1st Battalion, 227th Aviation Regiment (flying "armor"), Ft. Hood, Texas, 21st Cavalry Brigade (Air Combat), Ft. Hood, Texas, 3rd Armored Cavalry Regiment, Ft Hood, Texas, 1st Armor Brigade Combat Team, 3rd Infantry Division, Fort Stewart, GA., 1st Battalion, 64th Armor - Fort Stewart, GA., McAlester Army Ammunition Plant, McAlester, OK., Radford Army Ammunition Plant, VA, Fort Sam Houston, command headquarters for the United States Army North (formerly the Fifth United States Army), United States Army South, the Army Medical Command (MEDCOM) headquarters, the Army Medical Department (AMEDD) Center and School, the Fifth Recruiting Brigade, Navy Regional Recruiting, the San Antonio Military Entrance and Processing Station, and the Medical Education and Training Campus (METC). Joined Lackland and Randolph Air Force Bases to create Joint Base San Antonio, under Air Force administration, Red River Army Depot, Texas, etc, etc, etc.
Seems like all those places have something in common...
:-)
I am talking about where they are built not stationed.