Alexander S. Pendleton was a Confederate staff officer in the Army of Northern Virginia during the American Civil War (1861–1865). Nicknamed Sandie, he was best known for his service under Confederate general Thomas J. "Stonewall" Jackson, who died following the Battle of Chancellorsville (1863), but he also served under Jackson's successors Richard S. Ewell and Jubal A. Early. Henry Kyd Douglas, a fellow member of Jackson's staff, called him "the most brilliant staff officer in the Army of Northern Virginia and the most popular with officers and men."