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 Angola Teng referred to an early conversation between Nixon and Mao Zedong regarding Angola. "We hope that through the work of both sides we can achieve a better situation there. The relatively complex problem is the involvement of South Africa. And I believe you are aware of the feelings of the black Africans toward South Africa." No CIA personnel were present, but this is mentioned in the context of setting US policy toward Angola, where CIA did have covert operations. United States Secretary of State Henry Kissinger replied, "We are prepared to push South Africa as soon as an alternative military