Hardee resigned his U.S. Army commission on January 31, 1861, In arguably his most successful battle, at the
Battle of Stones River that December, his Second Corps launched a massive surprise assault upon the right flank of
Maj. Gen. William Rosecrans's army, driving it almost to defeat, but again, as had happened at Perryville, Bragg failed to follow up his tactical success, opting instead to withdraw before the arrival of Union reinforcements. After the
Tullahoma Campaign, Hardee lost patience with the irascible, retreating Bragg and briefly commanded the Department of Mississippi and East Louisiana under General
Joseph E. Johnston. During this period, he met Mary Foreman Lewis, an Alabama plantation owner, whom he would later marry in January 1864. Hardee returned to Bragg's army after the
Battle of Chickamauga, taking over the corps of
Leonidas Polk at
Chattanooga, Tennessee, besieging the Union Army there. During the
Chattanooga campaign in November 1863, Hardee's Corps of the Army of Tennessee was defeated when Union troops under Maj. Gen.
George Henry Thomas assaulted their seemingly impregnable defensive lines at the
Battle of Missionary Ridge. , bearing the
battle honors "
Shiloh", "
Chickamauga", "
Murfreesboro", "
Perryville", "
Liberty Gap", "
Ringgold Gap", and "
Tunnel Hill" Hardee renewed his opposition to serving under Bragg and joined a group of officers who finally convinced
Confederate President Jefferson Davis to relieve Bragg. Hardee was given temporary command of the Army of Tennessee before Joseph E. Johnston took over command at Dalton, Georgia. In February 1864, Johnston was ordered by the President to dispatch Hardee to Alabama, to reinforce General Polk against General
Sherman's Meridian Campaign. Following Sherman's withdrawal to Vicksburg, Hardee was once again sent back to Georgia, where he joined Johnston's army for the
Atlanta campaign. As Johnston fought a war of maneuver and retreat against Maj. Gen.
William T. Sherman, the Confederacy eventually lost patience with him and replaced him with the much more aggressive Lt. Gen.
John Bell Hood. Hardee could not abide Hood's reckless assaults and heavy casualties. After the
Battle of Jonesboro that August and September, he requested a transfer and was sent to command the Department of
South Carolina,
Georgia, and Florida. He opposed
Sherman's March to the Sea as best he could with inadequate forces, eventually evacuating
Savannah, Georgia on December 20. Johnston's plan for Bentonville was for Hardee to engage one of Sherman's wings at
Averasborough so that Johnston could deal with one wing piecemeal. The plan was unsuccessful. He surrendered along with Johnston to Sherman on April 26 at Durham Station. ==Later life and death==