| Regimental number | 3616 |
| Date of birth | |
| Place of birth | Hyde Park, South Australia |
| Religion | Church of England |
| Occupation | Stockman |
| Address | 27 William Street, Norwood, South Australia |
| Marital status | Single |
| Age at embarkation | 21.6 |
| Height | 5' 10.25" |
| Weight | 178 lbs |
| Next of kin | Mother, Mrs Elizabeth Sykes, 27 William Street, Norwood, South Australia |
| Previous military service | Served for 16 months in the Senior Cadets. |
| Enlistment date | |
| Place of enlistment | Keswick, South Australia |
| Rank on enlistment | Acting Corporal |
| Unit name | 27th Battalion, 8th Reinforcement |
| AWM Embarkation Roll number | 23/44/2 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A30 Borda on |
| Regimental number from Nominal Roll | Commissioned |
| Rank from Nominal Roll | Lieutenant |
| Unit from Nominal Roll | 10th Battalion |
| Fate | Returned to Australia |
| Discharge date | |
| Other details |
War service: Egypt, Western Front Wounded in action, 23 July 1917. Commenced return to Australia on board HT 'Nestor', 20 May 1919; appointment terminated (discharged), Adelaide, 22 August 1919. Medals: British War Medal, Victory Medal Also served in World War II: Service No S766973. |
| Sources | NAA: B2455, SYKES John Wilfred |