| Place of birth | Raymond Terrace, New South Wales |
| School | Fort St Public School, Sydney, New South Wales |
| Religion | Church of England |
| Occupation | Pastoral |
| Address | c/o Bank of Australia |
| Marital status | Married |
| Age at embarkation | 26.6 |
| Height | 6' 0" |
| Weight | 159 lbs |
| Next of kin | Wife, Mrs Harriett Allan, Lanark, Tryan Road, Lindfield, New South Wales |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Warwick Farm, New South Wales |
| Rank on enlistment | 2nd Lieutenant |
| Unit name | 19th Battalion, 16th Reinforcement |
| AWM Embarkation Roll number | 23/36/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A40 Ceramic on |
| Rank from Nominal Roll | Lieutenant |
| Unit from Nominal Roll | 19th Battalion |
| Fate | Killed in Action |
| Place of death or wounding | Morlancourt, France |
| Age at death | 29 |
| Place of burial | Franvillers Communal Cemetery Extension (Plot I, Row D, Grave 24), France |
| Panel number, Roll of Honour, Australian War Memorial | 87 |
| Miscellaneous information from cemetery records | Parents: Robert John and Alice E ALLAN. |
| Other details |
War service: Western Front `Embarked Sydney, 7 October 1916; disembarked Plymouth, England, 21 November 1916. Proceeded overseas to France, 12 December 1916; taken on strength, 19th Bn, in the field, 18 December 1916. Detached to Musketry School, 18 January 1917; rejoined unit from detachment, 25 January 1917. Promoted Lt, 18 December 1917. Detached for duty with 5th Training Bn, 24 July 1917; marched into 5th Training Bn, Rollestone, England, 30 July 1917. Attended Southern Command School of Musketry, 7-30 August 1917; qualified 2nd Class. Attended Southern Command School of Musketry Range Finding Course, 3-11 September 1917: qualified. Marched out to Overseas Training Brigade, Longbridge Deverill, 8 November 1917. Proceeded overseas to France, 6 January 1918; rejoined 19th Bn, in the field, Belgium, 12 January 1918. Killed in action, 5 June 1918. Medals: British War Medal, Victory Medal |
| Miscellaneous details | Second given name incorrectly entered on Embarkation Roll as Archibald. |
| Sources | NAA: B2455, ALLAN Gerald Archbold |