Supreme Headquarters Allied Powers Europe in order to serve as White House Chief of Staff for President Richard Nixon during the depths of the Watergate crisis, was abruptly installed as SACEUR after Watergate's denouement. Haig arrived in 1974. Some scattered notes about his time at SHAPE are recorded by Colodny and Shachtman's book "The Forty Years War". A creature of habit, Haig took the same route to SHAPE every day – a pattern of behavior that did not go unnoticed by terrorist groups. On June 25, 1979, Haig was the apparent target of an assassination attempt in Mons, Belgium. A land mine blew up under
Exercise Longstep on a renewed urgency following the outbreak of the Korean War, prompting NATO to establish Supreme Headquarters Allied Powers Europe (SHAPE) under the command of General of the Army Dwight D. Eisenhower, U.S. Army, on 2 April 1951. Exercise Longstep was an early naval exercise for SHAPE's southern regional command, Allied Forces Southern Europe (AFSOUTH). The overall exercise commander for Grand Slam was Admiral Robert B. Carney USN, NATO's Commander-in-Chief Allied Forces Southern Europe (CINCSOUTH). AFSOUTH component commanders during Longstep were: The objective of the Allied ("Blue") forces was to dislodge enemy ("Green") invasion forces from their occupying positions in