LeDuc also was present during the Atlanta campaign and the battle and capture of Atlanta. He was responsible for evacuating people from the city while Sherman razed it. He was then temporarily attached to the staff of George Henry Thomas and repaired a bridge during the Battle of Franklin. During the Battle of Nashville he accompanied John Schofield. When the Civil War ended in 1865, LeDuc was discharged at the rank of brevet brigadier general and returned to Hastings.