[3] In 1943, during the Second World War, a Royal Air Force version, the Conspicuous Gallantry Medal (Flying), was added.

Only twelve were finally awarded, with the medals created by adapting existing examples of the Royal Marines Meritorious Service Medal, with the words 'MERITORIOUS SERVICE' erased from the reverse inscription, and 'CONSPICUOUS GALLANTRY' engraved in its place.

[5] It remained an exclusively Naval award until World War II when a number of changes were made.

Eligibility was extended in April 1940 to Royal Air Force personnel serving with the Fleet; in July 1942 to Army personnel serving afloat, for example manning a merchant ship's anti-aircraft guns; and in September 1942 to ratings of the Merchant Navy.

[1] The above figures for World War II include ten honorary awards to servicemen from allied countries, eight for service afloat and two for gallantry while flying.