Considered one of most influential U. S. military officers of the twentieth century, William E. DePuy (1919--1992) developed the education and training program that regenerated the U.S. Army after the Vietnam War. Henry G. Gole draws from sources such as transcripts and letters in DePuy's personal papers, interviews with those who knew him best, and secondary literature to trace DePuy's life from child to decorated officer to commander of Training and Doctrine Command. General William E. DePuy: Preparing the Army for Modern War is the first book-length biography of the important figure who revolutionized military training and created a modern program for doctrine, education, and combat development that is still used today.