He is the author of Enduring Battle: American Soldiers in Three Wars, 1776-1945 (University Press of Kansas, 2011), which examines the changing nature of combat and the motivations of soldiers from the War of Independence to the Second World War. He has served as Lead Historian for twelve Teaching American History cohorts and received Mason’s Award for Teaching Excellence in 2013. Hamner holds an A.B. in history and English from Dartmouth College, and an M.A. and Ph.D. in history from the University of North Carolina at Chapel Hill. From 2014 to 2016 he serves as a visiting professor at the U.S. Army War College in Carlisle, Pennsylvania.