| Regimental number | 12/3526 |
| Address | Prospect Terrace, Mount Eden, Auckland |
| Marital status | Single |
| Next of kin | Father, Thomas S Jacka, Prospect Terrace, Mount Eden, Auckland |
| Rank on embarkation | Private |
| Enlistment status | Volunteer |
| Unit name | New Zealand Expeditionary Force, 8th Reinforcements, Auckland Infantry Battalion |
| Embarkation details | Unit embarked from Wellington on board Willochra on |
| Final rank | 2nd Lieutenant |
| Final unit | 16th (Waikato) Company, 1st Battalion, Auckland Infantry Regiment |
| Fate | Killed in Action |
| Age at death from cemetery records | 30 |
| Place of burial | Beaulencourt British Cemetery (Plot I, Row G, Grave No 18), Ligny-Thilloy, France |
| Miscellaneous information from cemetery records | Parents: T.S. and Marion Jacka, Cliff Road, St Helier's Bay, Auckland |
| Family/military connections | Brothers: 2/248 Sergeant Thomas Selwyn JACKA, 12th Battery, New Zealand Field Artillery, killed in action, 28 September 1917; 54883 Hubert Waters JACKA. |
| Other details |
War service: Egypt, Western Front Medals: 1914-15 Star, British War Medal, Victory Medal |
| Miscellaneous details | Nominal Roll Vol. 1: Auckland Infantry Batln/Eighth |