What is the theme in Delta Force by Charlie A. Beckwith?

Command and control leadership is a major theme. Much of this book involves the author's progress through military officer ranks. At every stage of this there are issues concerning who is in command, and who is in control of which projects and activities. This is also true for enlisted personnel but the structure and implications are different. For enlisted personnel, they are given tasks to perform. The higher the ranks, the more personnel involved, and therefore more managerial requisites and more responsibility.