| Regimental number | 1106 |
| Place of birth | Casino, New South Wales |
| Religion | Church of England |
| Occupation | Stockman |
| Address | Balanda, Queensland |
| Marital status | Single |
| Age at embarkation | 22 |
| Height | 5' 7" |
| Weight | 133 lbs |
| Next of kin | Mother, Mrs Maud Bain, Balanda, Queensland |
| Previous military service | Australian Light Horse, Casino, New South Wales |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Place of enlistment | Brisbane, Queensland |
| Rank on enlistment | Private |
| Unit name | 11th Light Horse Regiment, 5th Reinforcement |
| AWM Embarkation Roll number | 10/16/2 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A69 Warilda on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 11th Light Horse Regiment |
| Fate | Killed in Action |
| Place of burial | No Known Grave |
| Commemoration details | Jerusalem Memorial, Palestine |
| Family/military connections | Brothers: Andrew Wilson BAIN, returned to Australia, ; 135 Pte Walter Ernest BAIN, 31st Bn, killed in action, 20 July 1916. |
| Other details |
War service: Egypt, Palestine Admitted to 4th Auxiliary Hospital, Abbassia, 27 February 1916 (mumps); discharged to unit, 11 March 1916; reported to 11th Light Horse Regiment for duty, 11 March 1916. Taken on strength, 3rd Light Horse Training Regiment, Tel-el-Kebir, 4 April 1916. Transferred to 11th Light Horse Regiment, 25 August 1916; taken on strength, 1 September 1916. Marched into 4th Light Horse Training Regiment, Moascar, 24 February 1917. Detached to Hotchkiss School of Instruction, Ferry Post, 24 February 1917; rejoined unit, 8 March 1917. Killed in action, Palestine, 2 May 1918. Medals: British War Medal, Victory Medal |
| Sources | NAA: B2455, BAIN William Harold |