This is an alphabetically compiled record of British officers of the Navy, Royal Marines and Royal Air Force who died in service of their country, indicating when and where they died (if they died at sea the name of the ship is given) and are buried or commemorated. It is arranged in two sections, first the naval and marine officers and second the air force. The RAF came into being on 1 April 1918, so all listed in this section died on or after that date. Prior to 1 April 1918 it was the RFC and those casualties appear in Volume 1 of the series. For those who died serving in the 63rd (RN) Division the unit is given and for air force officers the squadron.