Army General. This was due to the two states' geographic distance from the LANDSOUTH headquarters, as well as political disagreements over which nation should be the overall commander for their ground forces. With the establishment of Allied Command Atlantic (ACLANT) on 30 January 1952, the Supreme Allied Commander Atlantic joined the previously created Supreme Allied Commander Europe as one of the alliance's two Major NATO Commanders. A third was added when Allied Command Channel was established on 21 February 1952 to control the English Channel and North Sea area and deny it to the enemy, and protect the sea lanes of communication. The establishment of this post, and the agreement that it was to be filled by the British Commander-in-Chief, Portsmouth, was part of the compromise that allowed an American officer to take up the SACLANT post. Previously Commander-in-Chief Portsmouth had controlled multinational naval operations in the area under WUDO auspices. In due course the CINCHAN role was assumed by the British Commander-in-Chief Fleet. In 1966, when French president Charles de Gaulle withdrew French forces from the military command structure, NATO's headquarters was forced to move to Belgium. SHAPE was moved to Casteau, north of the Belgian city of Mons. Headquarters Allied Forces Central Europe was moved from the Chateau de Fontainebleau outside Paris to Brunssum, in the Netherlands. Structure in 1989 NATO Military Committee, led by the Chairman of the NATO Military Committee, in Brussels, Belgium Allied Command Europe (ACE), led by Supreme Allied Commander Europe (SACEUR), in Mons, Belgium ACE Mobile Force, in Seckenheim, Germany United Kingdom Air Forces, in High Wycombe, United Kingdom NATO Airborne Early Warning Force, in Maisieres, Belgium Allied Forces Northern Europe (AFNORTH), in Kolsås, Norway Allied Forces North Norway (NON), in Bodø, Norway Allied Forces South Norway (SONOR), in Stavanger, Norway Allied Forces Baltic Approaches (BALTAP), in Karup, Denmark Allied Land Forces Schleswig-Holstein and Jutland (LANDJUT), in Rendsburg, Germany Allied Land Forces in Zealand (LANDZEALAND), in Ringsted, Denmark Allied Air Forces Baltic Approaches (AIRBALTAP), in Karup, Denmark Allied Naval Forces Baltic Approaches (NAVBALTAP), in Karup, Denmark Allied Forces Central Europe (AFCENT), in Brunssum, Netherlands Northern Army Group (NORTHAG), in Rheindahlen, West Germany Central Army Group (CENTAG), in Heidelberg, West Germany Allied Air Forces Central Europe (AAFCE), in Ramstein, West Germany Second Allied Tactical Air Force (2 ATAF), in Rheindahlen, West Germany Fourth Allied Tactical Air Force (4 ATAF), in Ramstein, West Germany Allied