Basic Details Surname Johnstone Forenames William Alexander Milne Gender Male Information stated on memorial War Second World War (1939-1945) Served or died Died Primary Service As stated on memorial Unit (Primary - Stated) Royal Air Force Rank / Title (Primary - Stated) Sergeant Flight Engineer Our References Service (Primary - Our reference) Royal Air Force/ Royal Flying Corps Unit (Primary - Our reference) Royal Field Artillery Rank / Title (Primary - Our reference) Flight Sergeant Secondary Service As stated on memorial Service (Secondary - Stated) Formerly Police Unit (Secondary - Stated) Metropolitan Police Sub-unit (Secondary - Stated) H Division Rank / Title (Secondary - Stated) PC347H (service number 124394) Our references Service (Secondary - Our reference) Civilian Unit (Secondary - Our reference) Police Rank / Title (Secondary - Our reference) Group Captain Death and Burial details Country of death Germany Town of death Harburg Country of burial Not Stated on Memorial Year of death 1945 Month of death March Day of death 7 Manner of death as stated "Missing from air operations over Harburg, Germany, and presumed killed in action" Manner of death reference Missing