H. Rousseau, Hazen's division commander, concentrated artillery to support them. Several Confederate attacks were beaten off. Their defense was so spirited against heavy odds that they arguably saved the Union line. The Round Forest is now known informally as "Hell's Half Acre". Hazen was wounded in the shoulder during the fight and was promoted to brigadier general, effective November 29, for his gallantry. Months after the battle, a monument was erected by veterans of the fight in a small Union cemetery at the site. This is considered to be the oldest Civil War monument remaining in its original battlefield location. Hazen continued with the Army of the Cumberland through the successful Tullahoma Campaign, the serious Union defeat at the Battle of Chickamauga in XXI Corps, and the victorious Battle of Chattanooga in IV Corps. Hazen's brigade played a major role in the crossing at Brown's Ferry near Chattanooga that, together with the arrival of troops under Maj. Gen. Joseph Hooker, opened the line of supply or "Cracker Line" to the Army of the Cumberland, penned into its defenses by the Confederates.. Hazen was promoted to brevet major in the regular army for Chickamauga and brevet lieutenant colonel for Chattanooga. He served under Maj. Gen. William T. Sherman in the Atlanta Campaign, the March to the Sea, and the Carolinas Campaign, in the Army of the Cumberland and then in the Army of the Tennessee. He distinguished himself at the Battle of Pickett's Mill while still leading a brigade in IV Corps. His brigade had to attack without adequate support and suffered badly. Later, asked where his brigade was, Hazen replied, "Brigade, Hell, I have none. But what is left of it is over there in the woods." Hazen was elevated to division command in XV Corps late in the Atlanta Campaign. During Sherman's March to the Sea, Hazen's division distinguished itself in the capture of Fort McAllister, Georgia, on December 13, 1864. This action opened communications between Sherman's army group and the United States Navy. He was promoted to brevet colonel in the regular army in September 1864 and to major general of volunteers on December 13, 1864. Very late in the war, he commanded the XV Corps of the Army of the Tennessee and was eventually promoted to brevet major general in the regular army, March 13, 1865. Postbellum career As the U.S. Army was drawn down following the