David W. Hogan, Jr. is the Director of Histories at the US Army Center of Military History. He is the author of A Command Post at War: First Army HQ in Europe, 1943-1945; Centuries of Service: The U.S. Army, 1775-2005; and Raiders or Elite Infantry? The U.S. Army Rangers from Dieppe to Grenada. He is currently working on a biography of General of the Army Omar N. Bradley.