This essay from The Oxford Companion to American Military History goes into the causes of the Vietnam War and shows how the United States became embroiled incrementally from the 1950s up to 1965. An interesting section explains how the...

Examine the Vietnam War through this summary, the transcript of the Gulf of Tonkin Resolution, questions for analysis, references for further reading, and a question/answer section from the community.

Read the opposing viewpoints of General Westmoreland, U. S. commander in Vietnam during the troop escalation, and Sgt. Donald Duncan, a Vietnam veteran, who became one of the first critics of the U.S. Vietnam policy. Was the Vietnam War...