"to hitch up with Man o' War"

Man o' War (1917-1947) is considered one of the greatest thoroughbred racehorses of all time.  He won 20 of his 21 races.

He was owned and bred by August Belmont Jr, who had joined the US army at age 65 to serve in France during World War I. While he was overseas, his wife named a new foal "Man o' War" in honour of her husband.