A Question of Loyalty plunges into the seven-week Washington trial of Gen. William "Billy" Mitchell, the hero of the U.S. Army Air Service during World War I and the man who proved in 1921 that planes could sink a battleship. In 1925 Mitchell was frustrated by the slow pace of aviation development, and he sparked a political firestorm, accusing the army and navy high commands -- and by inference the president -- of treason and criminal negligence in the way they conducted national defense. He was put on trial for insubordination in a spectacular court-martial that became a national obsession during the Roaring Twenties.

Uncovering a trove of new letters, diaries, and confidential documents, Douglas Waller captures the drama of the trial and builds a rich and revealing biography of Mitchell.

Douglas Waller is a senior correspondent for Time, and before that was with Newsweek. He is the author or coauthor of six previous books, including the national bestseller Big Red, The Commandos, and Air Warriors. He lives in Annandale, Virginia, with his wife and has three children.