Certainly these two were decent.
Man o' War sired American Flag and Crusader, who won successive Belmont Stakes in 1925 and 1926. Both colts were generally considered the best three-year-old colts of their year, and Crusader was also largely accepted as the best racehorse of 1926.

won the race

Anatina, Caulfield R10

Man o' War also sired War Admiral.
War Admiral won 21 of his 26 starts, including the Pimlico Special and the U.S. Triple Crown in 1937. War Admiral was voted 1937 American Horse of the Year.

Moonee Valley R6 N-1 Speediness

won the race

Thanks for info Sands. Have read a bit myself since. Interesting stuff.

Kool

Worth a read, War Relic, considered the most successful sire of any of Man o' War's sons

won the race