Ballistic missiles in the context of "Rocket engine"

In military organizations, an artillery battery is a unit or multiple systems of artillery, mortar systems, rocket artillery, multiple rocket launchers, surface-to-surface missiles, ballistic missiles, cruise missiles, grouped to facilitate better battlefield communication and command and control, as well as to provide dispersion for its constituent gunnery crews and their systems. The term is also used in a naval context to describe groups of guns on warships.

John F. Kennedy's tenure as the 35th president of the United States began with his inauguration on January 20, 1961, and ended with his assassination on November 22, 1963. Kennedy, a Democrat from Massachusetts, took office following his narrow victory over Republican incumbent vice president Richard Nixon in the 1960 presidential election. He was succeeded by Vice President Lyndon B. Johnson.

Kennedy's time in office was marked by Cold War tensions with the Soviet Union and Cuba. In Cuba, a failed attempt was made in April 1961 at the Bay of Pigs to overthrow the government of Fidel Castro. In October 1962, the Kennedy administration learned that Soviet ballistic missiles had been deployed in Cuba; the resulting Cuban Missile Crisis carried a risk of nuclear war, but ended in a compromise with the Soviets publicly withdrawing their missiles from Cuba and the U.S. secretly withdrawing some missiles based in Italy and Turkey. To contain Communist expansion in Asia, Kennedy increased the number of American military advisers in South Vietnam by a factor of 18; a further escalation of the American role in the Vietnam War would take place after Kennedy's death. In Latin America, Kennedy's Alliance for Progress aimed to promote human rights and foster economic development.