Man O' War (1917-1947) is considered by some to have been the greatest thoroughbred race horse of all time.

In a comparatively short racing career (1919-1920), he compiled a 20-1 record against the best horses in America, including a 20-length victory in the Belmont Stakes in 1920.

He also had an impressive stud career, most notably siring War Admiral. Another of his offspring, Hard Tack, sired Seabiscuit.