Virginia. Appointed Virginia. 5. Breveted Major-General, April 24, 1861. Breveted Major-General of State forces; member of Governor's Advisory Council; Superintendent Virginia Military Institute.
Virginia. Appointed Virginia. 7. Brigadier-General, 1864. Chief-engineer (1st) of Army of Northern Virginia, (2d) of Department of Georgia, South Carolina and Florida.
Virginia. Appointed Virginia. 16. Colonel, (1st) commanding Forty-sixth Virginia Infantry; (2d) Colonel, commanding Tenth Virginia Cavalry, Army of Northern Virginia.
South Carolina. Appointed South Carolina. 32. Colonel, June 24, 1861. First Quartermaster-General, Confederate States Army, Richmond, 1861-‘62.
Massachusetts. Appointed Massachusetts. 34. Brigadier-General, April 9, 1861. Commanding Brigade in Army of Potomac, afterwards Brigade in Army of the West.
 South Carolina. Appointed South Carolina. 39. No trace. （Cullum says he was in Confederate States Army.) 1834.
Pennsylvania. Appointed Pensylvania. 8. Lieutenant-Colonel, First Florida Cavalry.
Massachusetts. Appointed Massachusetts. 10. Colonel, August 14, 1861. Commanding First Louisiana Regiment of Artillery.
Pennsylvania. 17. Lieutenant-Colonel, Seventh Georgia Infantry.
South Carolina. Appointed South Carolina. 23. No trace. (There were several Barnwells in Confederate States Army, but no trace of Thomas O.)
Georgia. Appointed Georgia. 25. Brigadier-General, August 31, 1863. Commanding Brigade Mc-Laws' Division, Longstreet's Corps, Army of Northern Virginia.