| Regimental number | 6781 |
| Date of birth | |
| Place of birth | West Wyalong, New South Wales |
| School | Peakhurst Public School, New South Wales |
| Religion | Church of England |
| Occupation | Machinists assistant |
| Address | Hidaway, Station Street, Mortdale, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 18 |
| Next of kin | Father, B W Mallard, Hidaway, Station Street, Mortdale, Sydney, New South Wales |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 2nd Battalion, 22nd Reinforcement |
| AWM Embarkation Roll number | 23/19/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT SS Port Nicholson on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 2nd Battalion |
| Fate | Returned to Australia |
| Family/military connections | Brothers: 28151 Gunner Basil Guy Mortimer Evans MALLARD, Field Artillery Brigade 11, Reinforcement 7, returned to Australia 1 April 1919; 2204 Private Walter Lancelot Oscar Maitland MALLARD, 13th Battalion, 6th Reinforcement, returned to Australia 8 September 1919. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal. Returned to Australia per H.M.S. 'Boorara'. Also served in the 1939-45 War, N102592, Sgt. H.R. Mallard, NSW Eschelon and Records, 28 January 1941 to 7 March 1946. |
| Date of death | |
| Age at death | 65 |
| Place of burial | Cremated at Woronora Crematorium; ashes scattered in Oatley Park as requested. He was an Alderman and Mayor of Hurstville Council for many years and loved the Park. |