In Masters and Commanders Andrew Roberts describes how four titanic figures shaped the grand strategy of the West during the Second World War. The book attempts to give answers to key questions regarding allied strategy based on the personalities and relationships between two political masters - Winston Churchill and Franklin D. Roosevelt - and the military commanders of their armed forces - the Chief of the Imperial General Staff, General Sir Alan Brooke, and the US Army Chief of Staff, General George C. Marshall. Each was exceptionally tough-willed and strong minded, and each was certain that he knew best how to win the war. Yet each knew that he had to win at least two of the others over in order to get his strategy adopted. The book traces the mutual suspicion and admiration, the rebuffs and the charm, the often explosive disagreements and wary reconciliations which resulted.