Operation Devon was the codeword given to an amphibious landing by British Commandos at Termoli on the Adriatic coast of Italy during the Italian Campaign of World War II. It was launched on 3 October 1943, as part of the attack on the Volturno Line, and was undertaken by No. 3 Commando, No. 40 (Royal Marine) Commando and other elements of the 2nd Special Service Brigade. It was later reinforced by two brigades of the British 78th Infantry Division.