[5] He fought in the Second Boer War, and took part in operations in the Orange Free State and Transvaal, including the Battle of Paardeberg and the Relief of Kimberley.

Following the end of the war in June 1902, he left Cape Town on the SS Sicilia and returned to Southampton in late July.

After being made a Companion of the Order of the Bath in February 1915,[10] he was promoted to the temporary rank of brigadier-general in July[11] and given command of the 5th Cavalry Brigade in the place of Philip Chetwode.

He was killed on 3 October 1915, while inspecting front line trenches where his brigade were working digging and clearing up battlefield debris.

The brigades' war diary records: Brigadier-General Frank Wormald killed by shrapnel whilst going round trenches of late battlefield, Vermelles.