For 10 points, name this war fought by the US from 1961 to 1975 in a divided Southeast Asian country.
This war's Strategic Hamlet Program largely failed, and William Calley was convicted of a massacre investigated by Seymour Hersh in this war. General Westmoreland commanded forces in this war until a series of attacks on a local lunar holiday, the Tet Offensive, and it included the battle of Khe Sanh. The Kent State massacre occurred during its expansion into nearby Cambodia. For 10 points, name this war fought by the US from 1961 to 1975 in a divided Southeast Asian country.
This war's Strategic Hamlet Program largely failed, and William Calley was convicted of a massacre investigated by Seymour Hersh in this war.
{Vietnam} War