David A. Weisiger | |
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| Born | December 23, 1818 Chesterfield County, Virginia |
| Died | February 23, 1899 (aged 80) Richmond, Virginia |
| Buried | |
| Allegiance |  United States of America Confederate States of America |
| Service |  United States Army Confederate States Army |
| Years of service | 1846–1848 (USA) 1861–1865 (CSA) |
| Rank |  Second Lieutenant (USV) Colonel (Virginia Militia)Brigadier General (CSA) |
| Unit | 1st Virginia Volunteers (USV) |
| Commands | 39th Virginia Militia Regiment 12th Virginia Infantry Regiment Weisiger's Brigade |
| Battles / wars | Mexican–American War American Civil War |
| Other work | Bank cashier |
David Addison Weisiger (December 23, 1818 – February 23, 1899) was a Confederate States Army brigadier general during the American Civil War (Civil War). Weisiger served as a second lieutenant in the 1st Virginia Volunteers, an infantry regiment, during the Mexican–American War. After the war, he became a leading businessman in Petersburg, Virginia. Between 1853 and 1860, he served in the 39th Virginia Militia Regiment, rising from captain to colonel. After the Civil War, he was a bank cashier at Petersburg, Virginia and a businessman at Richmond, Virginia.