Terrific book that outlines the career of General William E. DePuy, the first TRADOC commander and primary author of the Active Defense doctrine coming out of the Vietnam War.
The book follows DePuy's career from his time in the 90th Division in WWII, and fighting the battle of the Bulge through his culmination as a 4-Star General commanding TRADOC.
What is clear is that DePuy was captured by his experience in WWII, and looked to apply what he learned as a battalion commander over the course of his career. The main take away was use of overwhelming fires. Unfortunately, this idea did not bode so well in Vietnam. DePuy was one of Westmoreland's "boys" which carried him through his time as a division commander (1ID), even though he had severe friction with his Corps commander.
One of DePuy's positive traits was his ability to identify talent. He sought out the best officers to work for him, and cultivated multiple future 4-Star Generals (e.g. Donn Starry).
The ending to the book was a surprise and a shocker if you are unfamiliar with how his life came to an end.