| Regimental number | 12/2620 |
| Place of birth | Brighton, England |
| Address | Ascot Avenue, Remuera, Auckland |
| Marital status | Single |
| Next of kin | Father, R T Dagg, Ascot Avenue, Remuera, Auckland |
| Rank on embarkation | Sergeant |
| Enlistment status | Volunteer |
| Unit name | New Zealand Expeditionary Force, 6th Reinforcements, Auckland Infantry Battalion |
| Embarkation details | Unit embarked from Wellington on board Willochra on |
| Final rank | 2nd Lieutenant |
| Final unit | 2nd Battalion, Auckland Infantry Regiment |
| Fate | Killed in Action |
| Age at death from cemetery records | 25 |
| Place of burial | Thiepval Anglo-French Cemetery (Plot II, Row D, Grave No 11), Authuile, France |
| Miscellaneous information from cemetery records | Commemorated in St Peter's Anglican Church, Wellington. Parents: Robert and Rosalind Dagg, 194 Ponsonby Road, Auckland |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |
| Miscellaneous details | Nominal Roll Vol. 1: Auckland Infantry Batln/Sixth |