All American presidents are commanders in chief by law. Few perform as such in practice. In Roosevelt's Centurions, distinguished historian Joseph E. Persico reveals how, during World War II, Franklin D. Roosevelt seized the levers of wartime power like no president since Abraham Lincoln during the Civil War. Declaring himself "Dr. Win-the-War," FDR assumed the role of strategist in chief, and, though surrounded by star-studded generals and admirals, he made clear who was running the war. FDR was a hands-on war leader, involving himself in everything from choosing bomber targets to planning naval convoys to the design of landing craft. Persico explores whether his strategic decisions, including his insistence on the Axis powers' unconditional surrender, helped end or may have prolonged the war.