In the late 1970s, a series of studies concluded that interallied coordination would be improved by stationing three international NATO headquarters on the same installation with HQ USAREUR/7A. This resulted in the headquarters of the Fourth Allied Tactical Air Force (4ATAF) moving into building 8 of Campbell Barracks in September 1980. The CENTAG headquarters returned to Campbell Barracks in December 1980, occupying offices in buildings 3,5, and 7 (with an office for the CENTAG Chief of Staff in building 1). Finally, the headquarters of the Allied Command Europe Mobile Force (Land) moved to Campbell Barracks in December 1980, occupying part of building 7.