Key topic 3: US involvement in the Vietnam War, 1954–75 - 1 Reasons for US…

The idea

President Kennedy significantly escalated US involvement in Vietnam, increasing military advisors from around 800 to over 16,000 by 1963. A key initiative was the Strategic Hamlet Program, introduced in 1962 to isolate peasants from the Vietcong by moving them into fortified villages. This policy backfired disastrously; peasants resented being forcibly relocated from their ancestral lands, and corrupt officials often stole the provided aid, which ultimately increased support for the Vietcong. Furthermore, Diem’s brutal suppression of the Buddhist crisis in 1963 convinced Kennedy that Diem was a liability. The US tacitly supported a military coup, resulting in the overthrow and assassination of Diem in November 1963. This deepened US responsibility for South Vietnam, as subsequent governments proved even more unstable.

What earns the marks

• Detail the increase in US military advisors and financial aid under Kennedy's administration.
• Explain the aims of the Strategic Hamlet Program in attempting to cut off Vietcong supply lines and influence.
• Analyse why the Strategic Hamlet Program failed and how it alienated the South Vietnamese peasantry.
• Describe the events leading to the overthrow of Diem, including the Buddhist crisis and the US government's tacit approval of the coup.

Common mistakes and how to put them right

• Stating that Kennedy sent combat troops to Vietnam.

  Put it right: Kennedy sent military advisors (Green Berets) and equipment, but not official combat infantry.

• Believing the Strategic Hamlet Program was successful.

  Put it right: It was a major failure that increased resentment towards Diem and the US.

• Claiming the US directly assassinated Diem.

  Put it right: The US CIA knew of and supported the South Vietnamese generals' coup, but did not carry out the assassination themselves.

Exam tips

• Contrast the intended aims of the Strategic Hamlet Program with its actual disastrous outcomes to demonstrate evaluation skills.
• Connect the overthrow of Diem to the concept of 'greater involvement', as removing the leader made the US more responsible for the resulting political vacuum.
• Use the Buddhist crisis (e.g. the self-immolation of Thich Quang Duc) as a turning point that forced Kennedy to withdraw support for Diem.