| Regimental number | 261 |
| Place of birth | Blumberg, South Australia |
| Other Names | Allan Clifford |
| Religion | Presbyterian |
| Occupation | Machinist |
| Marital status | Single |
| Age at embarkation | 23.2 |
| Height | 5' 8" |
| Weight | 176 lbs |
| Next of kin | Frederick William Gilson, Blumberg, South Australia |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Morphettville, South Australia |
| Rank on enlistment | Private |
| Unit name | 9th Light Horse Regiment, B Squadron |
| AWM Embarkation Roll number | 10/14/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board Transport A10 Karroo on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 9th Light Horse Regiment |
| Fate | Returned to Australia |
| Discharge date | |
| Other details |
War service: Egypt, Gallipoli, Palestine, England Commenced return to Australia on board HT 'Port Denison', 25 September 1919; discharged (termination of period of enlistment), Adelaide, 10 January 1920. Medals: 1914-15 Star, British War Medal, Victory Medal |
| Date of death | |
| Sources | NAA: B2455, GILSON Alan Clifford |