“Faced with a crisis at Chattanooga, Abraham Lincoln turned to his most successful general, Ulysses S. Grant, to rescue the Union forces desperately holding on to the strategic little city on the Tennessee River. Employing the impressive body of research he amassed for his well-acclaimed work on the Chickamauga and Chattanooga Campaign, David A. Powell concisely and insightfully demonstrates how Grant, with both persistence and flexibility, led troops from three different Union armies to gain a significant victory." —Sam Davis Elliott, author of John C. Brown of Tennessee: Rebel, Redeemer, and Railroader“In this engagingly written account of the Chattanooga campaign, Powell transitions seamlessly between the tactical and strategic levels of war, recounting the mud and blood of the battlefield as well as the rancor and resentment among the commanders. Powell’s narrative reveals how Grant managed his commanders’ egos, foibles, and personalities to prevail in the struggle over the vital rail center of Chattanooga. The Impulse of Victory is a good introduction to the battles for Chattanooga and Grant’s contributions to Union victory." —Harry S. Laver, U.S. Army Command and General Staff School, author of A General Who Will Fight: The Leadership of Ulysses S. Grant