| Regimental number | 1992 |
| Place of birth | Dumfries Scotland |
| Religion | Presbyterian |
| Occupation | Farmer |
| Address | Blackboy Hill, Western Australia |
| Marital status | Single |
| Age at embarkation | 24 |
| Next of kin | Father, F J McJannett, Kununoppin, Western Australia |
| Enlistment date | 1 February 1915 |
| Rank on enlistment | Private |
| Unit name | 11th Battalion, 5th Reinforcement |
| AWM Embarkation Roll number | 23/28/2 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board HMAT A20 Hororata on 26 April 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 11th Battalion |
| Fate | Returned to Australia 17 September 1915 |
| Family/military connections | Brothers: 698 Pte Francis Ronald Reid McJANNET, 11th Bn, killed in action, 25 April 1915; 123 Pte John Blacklock McJANET, 10th Light Horse Regiment, killed in action, 7 August 1915. |
