This building is John B. Gordon Hall in Lafayette, Georgia. The structure, completed in 1836 as the Chattooga Academy, is Georgia's oldest brick school building and is named after Confederate Gen. John B. Gordon, who attended the school as a child and also served as governor of Georgia.
The Civil War (or War Between the States) dated 1861-1865. The North (Union/Yankees/them) fought the South (Confederates/Rebels/us).
Confederate Gen. Braxton Bragg made Gordon Hall his headquarters in September 1863. Bragg sat under an oak tree in front of Gordon Hall as he planned his attack on Union forces at Chickamauga. A stack of cannonballs honors him.