This is one of a series published by the U.S. Army Center of Military History. They were written by officers who held responsible positions in the Cambodian, Laotian, and South Vietnamese armed forces during the war in Indochina. The document addresses the enemy use of Cambodian territory and organization for logistic support. There are also sections on planning the combined incursion and early cross-border operations, the combined incursion, cooperation and coordination from 30 April to 30 June 1970, cross-border operations after 30 June 1970, Khmer participation, and observations/lessons learned.

Approved for public release; distribution is unlimited.