Historian Ethan S. Rafuse examines a tumultuous year in the history of the Army of the Potomac, when Gen. “Fighting” Joe Hooker took over a demoralized and bruised Union force and restored its effectiveness, only to lose the battle of Chancellorsville and be replaced by George Meade. Rafuse is professor of military history at the U.S. Army Command and General Staff College at Fort Leavenworth. Co-sponsored by the U.S. Army Command and General Staff College Foundation.