After his tour of duty ended in June 1943, then-Captain Barber requested a return to combat. Late that year, he joined the 449th Fighter Squadron in China, still flying P-38s. He claimed three further Japanese planes probably destroyed and damaged, but he was shot down on his 139th mission, bailing out near Kiukiang on April 29. He was rescued by Chinese civilians, who treated his injuries and escorted him to safety five weeks later. At the end of the war, Barber attained the rank of major and commanded one of America's first jet squadrons. He retired as a colonel in 1961.