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,
Cuba under Fidel Castro the early years of the administration in a measure to cut homelessness, while nurseries and day-care centers were opened for children and other centers opened for the disabled and elderly. In January 1961, Castro ordered Havana's U.S. Embassy to reduce its 300 staff, suspecting many to be spies. The U.S. responded by ending diplomatic relations, and increasing CIA funding for exiled dissidents; these militants began attacking ships trading with Cuba, and bombed factories, shops, and sugar mills. Both Eisenhower and his successor John F. Kennedy supported a CIA plan to aid a dissident militia, the Democratic Revolutionary Front, to invade