Supreme Headquarters Allied Powers Europe of "Général d'Armée" Alphonse Juin, French Army. "Holdfast" was a major allied air-ground exercise involving 150,000 British Army of the Rhine, Dutch, Belgian and Canadian troops of NATO's Northern Army Group in coordination with the Allied Air Forces Central Europe. They maneuvered east of the Rhine River in the British Zone under the overall command of Lt. General Sir Richard Nelson Gale, British Army. Finally, "Rosebud" involved ground maneuvers by the U.S. Seventh Army in the American Zone of Occupation of Allied-occupied Germany. The initial plans saw the defence of Western Europe from a Soviet invasion resting heavily on nuclear
NORTHAG wartime structure in 1989 There were two additional French corps (III Corps, ) associated with the Army Group. In 1966, France had withdrawn from the NATO Command Structure, but still wished to take part in the defence of Western Europe. A series of secret agreements made between NATOs Supreme Allied Commander Europe (SACEUR) and the French Chief of the Defence Staff detailed how French forces would reintegrate into the NATO Command Structure in case of war. At the outbreak of hostilities the French First Army would be placed directly under the command of Supreme Headquarters Allied Powers Europe (SHAPE), which would employ the three