| Regimental number | 17529 |
| Place of birth | Forth Tasmania |
| Religion | Presbyterian |
| Occupation | Clerk |
| Address | Burnie, Tasmania |
| Marital status | Single |
| Age at embarkation | 18 |
| Next of kin | Father, John Gardiner, Forth, Tasmania |
| Enlistment date | 26 September 1916 |
| Rank on enlistment | Sapper |
| Unit name | Cavalry Divisional Signal Squadron 1 |
| AWM Embarkation Roll number | 22/33/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A15 Port Sydney on 9 May 1917 |
| Rank from Nominal Roll | Sapper |
| Unit from Nominal Roll | 1st Wireless Signal Squadron |
| Fate | Returned to Australia 13 April 1919 |
| Family/military connections | Brother: 1019 Pte Jack William GARDINER MM, 59th Broad Gauge Railway Operating Company, returned to Australia, 21 June 1919. |