| Regimental number | 15560 |
| Occupation | Clerk |
| Next of kin | Father, George Lyall, St Andrew's, South Canterbury |
| Rank on embarkation | Private |
| Unit name | New Zealand Expeditionary Force, 15th Reinforcements (1st Draft), Canterbury Infantry Battalion, C Company |
| Embarkation details | Unit embarked from Wellington on board Waitemata on |
| Family/military connections | Brothers: 15927 Rifleman Gordon Gilmore LYALL, 3rd Bn, New Zealand Rifle Brigade, killed in action, 7 June 1917; 74394 Hugh Christopher LYALL; 46235 Corporal William Carnegie LYALL, 2nd Bn, Auckland Infantry Regiment, killed in action, 11 October 1918. |
| Sources | Nominal Roll Vol. 2: Roll 37, p. 9 |