Book excerpt: Drawing upon both archival research and his own military experiences in Vietnam, Willbanks focuses on military operations from 1969 through 1975. He begins by analyzing the events that led to a change in U.S. strategy in 1969 and the subsequent initiation of Vietnamization. He then critiques the implementation of that policy and the combat performance of the South Vietnamese army (ARVN), which finally collapsed in 1975.