EDWARD LENGEL is Chief Historian of the White House Historical Association, located in historic Decatur House on Lafayette Square in Washington, D.C. Before beginning work there in the fall of 2016, he directed the Washington Papers project for many years. A military historian, he is the author of several books, including General George Washington: A Military Life; To Conquer Hell: The Meuse-Argonne, 1918; First Entrepreneur: How George Washington Built His--and the Nation's—Prosperity; and the Army Historical Foundation award-winning Thunder and Flames: Americans in the Crucible of Combat, 1917-1918. He is also a regular contributor to magazines including Military History and Military History Quarterly, and appears often on television and radio including NPR and the History Channel.