Battle of Calabria
On 9 July "Hostile" participated in the Battle of Calabria as an escort for the heavy ships of Force C and unsuccessfully engaged Italian destroyers, suffering no damage. The ship, together with her sister, , and the destroyers and , were ordered to Gibraltar on 22 August where they were to temporarily join Force H. "Hostile" struck an Italian mine en route on the early morning of 23 August off Cap Bon that broke her back. The explosion killed five men and wounded three others. "Mohawk" took off the survivors while "Hero" fired two torpedoes to scuttle her.