"Professor Joseph Arthur Simon has written a masterful study of Marine Corps Commandant John A. Lejeune in The Greatest of All Leathernecks. Insightful, balanced, and archival-driven, Simon's documentary will stand as a biographical classic of an extraordinary Marine."--Manley R. Irwin, Professor Emeritus, University of New Hampshire

"Joe Simon has used his exhaustive research and compelling narrative skills to present the life of John Archer Lejeune, the longest serving Marine Corps Commandant in the twentieth century (1920-1929). Lejeune served in American military encounters in many places, emphasizing the need for training in amphibious landing techniques. Readers will glean much about the Marine Corps from its inception to the continuing value of Lejeune's influence long after his death."--Frank C. Mevers, former New Hampshire State Archivist

"Joseph Arthur Simon made the study of John A. Lejeune his life's work, and his biography of the father of the modern Marine Corps sets a high standard for future books on Marine Corps leadership." --Allan R. Millett, retired colonel of the United States Marine Corps and author of In Many a Strife: General Gerald C. Thomas and the U.S. Marine Corps, 1917-1956