Lt. Warnock was present at roll call until he was captured June 11, 1864 during the battle of Trevillian Station. He was sent to Fortress Monroe, Va. on June 20th and on June 23rd was transferred to Fort Delaware.
Lt. George O. Warnock was released June 25, 1865, being described as: complexion, light; hair, light; eyes, grey; height, 5 ft. 8 inches.