Timeline of United States military operations communist attack on a U.S. installation in central Vietnam, the United States escalated its participation in the war to a peak of 543,000 military personnel by April 1969. 1961: Cuba: The Bay of Pigs Invasion, known in Hispanic America as Invasión de Bahía de Cochinos (or Invasión de Playa Girón or Batalla de Girón), was an unsuccessful military invasion of Cuba undertaken by the CIA-sponsored paramilitary group Brigade 2506 on April 17, 1961. 1962: Thailand: The Third Marine Expeditionary Unit landed on May 17, 1962 to support that country during the threat of Communist pressure from outside; by July 30,
CIA activities in Iran of the United Kingdom to reach an agreement with regard to compensation has handicapped the Government of the United States in its efforts to help Iran." According to CIA reports, this succeeded in weakening Mossadeq's position, and turned the media, the Parliament, and the populace against him. The Shah believed that any delay in execution for Mossadeq would cause for his supporters to attack back. The CIA also increased their propaganda campaign to link Mossadeq to the Communists. In an attempt for a second coup, the CIA began to bribe the army and police officials. Roosevelt used the first failed