| Regimental number | 3607 |
| Place of birth | Cosgrove Victoria |
| Religion | Presbyterian |
| Occupation | Farmer |
| Address | Dookie, Victoria |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Father, William H Sim, Cosgrove, Victoria |
| Enlistment date | 17 August 1915 |
| Rank on enlistment | Private |
| Unit name | 24th Battalion, 8th Reinforcement |
| AWM Embarkation Roll number | 23/41/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A19 Afric on 5 January 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 8th Battalion |
| Fate | Returned to Australia 23 May 1917 |
| Family/military connections | Brother: 3606 Pte William Young SIM, 8th Bn, died of wounds, 27 July 1916; Cousin: 30438 Gunner Alec Gustavus SIM, 3rd Field Artillery Brigade, killed in action, 7 June 1918. |
| Miscellaneous details | BR, SIM, William Y, 3606, INF24REIN8 |
| Date of death | 29 May 1955 |
| Place of burial | Yenda Cemetery |