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 Hungary intervention...it was not permitted to send U.S. weapons in." In fact, the implication in the histories is that transferring arms was never seriously contemplated: "At this date no one had checked precisely on the exact location and nature of U.S. or other weapons available to CIA. This was done finally in early December" of 1956. Did a US-sponsored group play a part in the revolution? From the CS Histories, they did not. "Small psychological warfare and paramilitary units came into being in the early 1950s, (including the Hungarian National Council headed by Bela Varga), and occasional reconnaissance missions took place