|Place of birth||Cootamundra, New South Wles|
|Age at embarkation||19|
|Next of kin||Father, Edward John Castles, Atherton, via Cairns, Queensland|
|Previous military service||Enlisted in the AIF; discharged after 4 months (not having embarked) as medically unfit.|
|Place of enlistment||Brisbane, Queensland|
|Rank on enlistment||Private|
|Unit name||31st Battalion, Headquarters|
|AWM Embarkation Roll number||23/48/1|
|Embarkation details||Unit embarked from Melbourne, Victoria, on board HMAT A62 Wandilla on
|From Embarkation Records it is not possible to distinguish exactly which ship an individual in the Headquarters embarked. Two ships left Melbourne carrying men from the 31st Battalion: HMAT A62 Wandilla on 9 November 1915 and HMAT A41 Bakara on 5 November 1915|
|Rank from Nominal Roll||Private|
|Unit from Nominal Roll||31st Battalion|
|Fate||Killed in Action
|Place of burial||Rue- Petillon Military Cemetery (JPlot I, Row L, Grave No. 43), France|
|Panel number, Roll of Honour,|
Australian War Memorial
War service: Egypt, Western Front
Embarked Melbourne, 9 November 1915; disembarked Suez, 7 December 1915.
Embarked Alexandria to join the British Expeditionary Force, 16 June 1916; disembarked Marseilles, France, 23 June 1916.
Killed in action, 19 July 1916.
Buried at Military Cemetery, Rue Petilion, no date.Medals: 1914-15 Star, British War Medal, Victory Medal
|Miscellaneous details||Next of kin's address subsequently, Malanda, North Queensland (14 March 1917); then Box 39 Mareeba, North Queensland (14 March 1924).|
|Sources||NAA: B2455, CASTLES William Edward John|