Krulak–Mendenhall mission

The Krulak–Mendenhall mission was a fact-finding expedition dispatched by the Kennedy administration to South Vietnam in early September 1963. The stated purpose of the expedition was to investigate the progress of the war by the South Vietnamese regime and its US military advisers against the Viet Cong insurgency.

Source: Wikipedia — Krulak–Mendenhall mission (CC BY-SA 4.0)