On 13 October 1796, Terpsichore captured the Spanish frigate, Mahonesa off Cartagena. Devonshire was mentioned in dispatches for his part in the battle and consequently promoted to commander. In July 1800, Devonshire was given command of His Majesty's Sloop and fought on board at the Battle of Copenhagen on 2 April following, after which he was made an acting captain. His promotion was confirmed on 27 April and he took command of until the French Revolutionary War ended in 1802.
