| Regimental number | 50540 |
| Occupation | Farm hand |
| Next of kin | Father, V Callesen, Karere, Palmerston North, Manawatu |
| Rank on embarkation | Gunner |
| Unit name | New Zealand Expeditionary Force, 29th Reinforcements, New Zealand Field Artillery |
| Embarkation details | Unit embarked from Wellington, New Zealand, on board SS Mokoia on |
| Family/military connections | Brother: 49695 Private August CALLESEN. |
| Sources | Nominal Roll Vol. 3: Roll 70, p. 22 |