| Regimental number | 12/2254 |
| Address | 29a Beresford Street, Auckland |
| Marital status | Single |
| Next of kin | Brother, Arthur Harry Cowper, Russell Street, Arch Hill, Auckland |
| Rank on embarkation | Private |
| Enlistment status | Volunteer |
| Unit name | New Zealand Expeditionary Force, 4th Reinforcements, Auckland Infantry Battalion |
| Embarkation details | Unit embarked from Wellington on board HMNZT 21 Willochra on |
| Miscellaneous details | Nominal Roll Vol. 1: Auckland Infantry Batln/Fourth |