Timothy D. Johnson is professor of history and University Research Professor at Lipscomb University in Nashville, Tennessee. He received his PhD from the University of Alabama in 1989 and has published extensively on military history in the antebellum period. He is the author or editor of numerous articles, and six previous books including three on the Mexican-American War. His Notes of the Mexican War, 1846-1848, along with Memoirs of Lieut. General Winfield Scott, both were published by the University of Tennessee Press. In addition, he has been a research fellow at Yale University and the Virginia Historical Society.