Nineteen months after Japanese forces attacked Pearl Harbor and forced the United States to enter World War II, boats carrying the 7th US Army landed on the shores of southern Sicily. Dubbed Operation Husky, the campaign to establish an Allied foothold in Sicily was led by two of the most noted American tacticians of the twentieth century: George S. Patton Jr. and Geoffrey Keyes.  While Patton is the subject of numerous books and films, Keyes's life and achievements have gone unrecognized, but his anonymity is by no means an accurate reflection of the value of his contributions and dedicated service in World War II and the succeeding cold war.  To look at this lacuna is today’s guest, James Holsinger, author of Patton's Tactician: The War Diary of Lieutenant General Geoffrey Keyes. His account begins in October 1942, prior to the invasion of French Morocco and Keyes's engagement in World War II and the Cold War. Holsinger has integrated a variety of related sources, including correspondence between Keyes, Patton, and Eisenhower. A day-to-day chronicle of Keyes's experiences in the World War II Mediterranean Theater and the early days of the Cold War in occupied Germany and Austria, Patton's Tactician is an invaluable primary source that offers readers a glimpse into the mind of one of America's most important World War II corps commanders.