Here are five reasons why the Bay of Pigs Invasion went so spectacularly wrong. That's when things really started to unravel, says Jim Rasenberger, author of ' The Brilliant Disaster: JFK, Castro, and America's Doomed Invasion of Cuba's Bay of Pigs'. But the CIA-trained pilots, who flew World War II-era B-26 bombers painted to look like Cuban planes, failed to destroy all of Castro's aircraft. The attack began the morning of April 15, 1961, with what was supposed to be an aerial bombardment of Castro's small air force. The mission, known as the Bay of Pigs Invasion, was doomed from the start and is widely regarded as one of America's worst foreign policy failures. Kennedy was elected president in 1960, he inherited a convoluted scheme to invade Cuba using 1,500 of these anti-Castro Cubans trained by the CIA. to form a counter-revolutionary army at a covert CIA training camp in Nicaragua called 'Happy Valley.' The group was known as Brigade 2506. Eisenhower, the CIA recruited Cuban exiles in the U.S. Just months after Fidel Castro and his communist revolutionaries took power in Cuba in 1959, the United States government secretly began to plot his downfall. Photo12/Universal Images Group via Getty Images

Members of Brigade 2506, the counter-revolutionary military unit that tried to overthrow Cuban dictator Fidel Castro, surrender after the Bay of Pigs fiasco.

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