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
Supreme Headquarters Allied Powers Europe Mediterranean Sea. To improve alliance military readiness and integration, NATO continued to hold annual alliance-wide military exercises each autumn ("FALLEX") that was jointly planned and executed by SACEUR and SACLANT forces. From 1967 however, under 'flexible response', the aim became to build up conventional forces so that, if possible, nuclear weapons might not be needed. However it was made clear that first use of nuclear weapons might be necessary if the conventional defences were being overwhelmed. Eventually SACEUR was allocated planning control of a small number of US and British ballistic missile submarines, and some 7,000 tactical nuclear weapons were