| Regimental number | 33126 |
| Occupation | Civil engineer |
| Next of kin | Father, Campbell Johnstone, Whatawhata Waikato |
| Rank on embarkation | Sergeant |
| Unit name | New Zealand Expeditionary Force, 23rd Reinforcements, Auckland Infantry Regiment, A Company |
| Embarkation details | Unit embarked from Wellington on board HMNZT Ruapehu on |
| Sources | Nominal Roll Vol. 3: Roll 57, p. 3 |