In his racing career he was trained by Aidan O'Brien and owned by Joseph Allen, Mrs John Magnier, Michael Tabor and Derrick Smith.

[4] War Command's first start came on 7 June 2013 in a seven-furlong maiden race at Leopardstown, which he won by a neck from the pre-race favourite Intensified.

He was an outsider for the race and started at the price of 20/1, with his trained Aidan O'Brien also having two more fancied runners in the colts Stubbs and Sir John Hawkins.

War Command's jockey Seamie Heffernan, held him up near the rear of the field in the early stages of the race, before moving closer to the leaders with two furlongs left to run.

[9] On 12 October, War Command was sent back to England to contest Britain's most prestigious two-year-old race, the Dewhurst Stakes over seven furlongs at Newmarket Racecourse.

In November, War Command was narrowly defeated by Kingston Hill in the voting for Champion Two-year-old Colt at the Cartier Racing Awards.

His next engagement was the St James's Palace Stakes at Royal Ascot, in which he finished fourth behind Kingman, Night of Thunder and Outstrip.