Paul Johstono gained his PhD from Duke University, North Carolina, USA, with a thesis on Hellenistic military institutions. He is an Associate Professor of Military History and Security Studies at the Air Command & Staff College, Maxwell Air Force Base, where he designs and teaches leadership and ethics curriculum. He was previously Associate Professor for History of Warfare and Leadership Studies at The Citadel in Charleston, South Carolina. He was formerly lead project historian for the video game team, Europa Barbarorum. He has published numerous articles and book chapters on Hellenistic military history, Ptolemaic history, and ancient historiography, but this is his first monograph. He regularly speaks on ancient warfare, leadership, and strategy. He resides in Wetumpka, Alabama, USA, with his wife and three children.