| Regimental number | 2840 |
| Place of birth | Jondaryan, Queensland |
| Religion | Church of England |
| Occupation | Labourer |
| Address | Clontarf, Millmerran, Queensland |
| Marital status | Single |
| Age at embarkation | 20.10 |
| Height | 5' 9" |
| Weight | 153 lbs |
| Next of kin | Mother, Mrs Elizabeth Mancktelow, Clontarf, Millmerran, Queensland |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Toowoomba, Queensland |
| Rank on enlistment | Private |
| Unit name | 41st Battalion, 6th Reinforcement |
| AWM Embarkation Roll number | 23/58/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A64 Demosthenes on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 49th Battalion |
| Fate | Returned to Australia |
| Discharge date | |
| Family/military connections | Brother: 2841 Pte Arthur MANCKTELOW, 49th Bn, returned to Australia, 1 July 1919. |
| Other details |
War service: Western Front Wounded in action, 16 September 1918. Commenced return to Australia on board HT 'Delta', 24 January 1919; discharged (medically unfit:), Brisbane, 23 April 1919. Medals: British War Medal, Victory Medal |
| Sources | NAA: B2455, MANCKTELOW Walter |