Admiral Sims is remembered as the handsome, able, vigorous, indiscreetly outspoken, iconoclastic stormy-petrel of the Navy who was prominent during World War I throughout American participation in which he commanded all United States naval forces in European waters. This was a particularly difficult naval biography to write, because its subject was not a hero whose claim to fame arose from spectacular action in combat. The notable battles he fought were conflicts of ideas within his own service. He is a pioneer, whose original thinking impressed itself upon many aspects of the modern American Navy. In relating these controversies, the author, a son-in-law, maintains a sound perspective and impartiality. He also gives a very human portrait of the man. A book that will be important in its special field.