During the early 1990s, following the relaxation of the tensions between East and West, a major reorganization of the NATO command and control structure was undertaken. As part of this, and to take account of the decrease in the number of allied aircraft in Europe, a rationalization of the Central Region air force headquarters occurred in 1993 with the closing of Second Allied Tactical Air Force and Fourth Allied Tactical Air Force and the expansion of AAFCE to meet the new increased task as it absorbed functions previously undertaken by the two subordinate ATAFs.[1]