Foyle College's contribution to the Great War was not unusual. As with many schools the faces that stare down from the team photographs of the early twentieth century would volunteer to swap the mud of the rugby field for the clogging mire of the trenches. A total of four hundred and ninety Old Boys would answer the call to arms. To some this may not seem a particularly large number but at that time, long before the Education Act of 1947, the cadre of the school was comfortably under two hundred. Seventy two of their number would not return. Reading through their names and ranks one cannot but notice the percentage who held the rank of Subaltern. It is reported that the average life expectancy for a junior officer at the Front was only six weeks, even less than that of the , "other ranks."
Trooper R. S. Bailey - North Irish Horse
Captain J Ballentine - 11th Batt R. Inniskilling Fusiliers
Lieut. J. H. Barr - Royal Irish Rifles
Lieut. J. J. Beasley - 6th Batt. Royal Irish Fusiliers
Corporal C. H. Binions - Royal Engineers
F. P. Blacklay - 79th Canadian Cameron Highlanders
2nd Lieut W. G. Boyd - Royal Inniskilling Fusiliers
2nd Lieut W. K. M. Britton - Royal Flying Corps
Captain B. Brown, M.C. - R.A.M.C.
Lieut. D. Buchanan - 2nd Batt. Seaforth Highlanders
Lieut. R. B. Buchanan - R. Irish Regiment
R. Burgess - South African Field Force
Lieut. T. C. Campbell - Royal Engineers
Private A. G. Cathcart - 5th Canadian Infantry
J. Clarke - 26th Batt. Royal Fusiliers
2nd Lieut. J. N. Corscaden - Royal Inniskilling Fuisiliers
2nd Lieut. E. E. Craig - 20th Batt. Royal Irish Rifles
Cadet S. W. Craig - Royal Irish Rifles
2nd Lieut. C. L. Crockett - 12th Batt. Royal Inniskilling Fuisiliers
Captain W. R. Cronyn - Royal Army Veterinary Corps
Lieut. A. J. S. Dick - Royal Inskilling Fuisiliers
Assistant Paymaster J. Diver - Royal Navy
2nd Lieut. J. W. Drennan - 10th Batt. Royal Inskilling Fuisiliers
Flight Sub- Lieut. M. English - Royal Naval Air Service
2nd Lieut. R. R. Gallagher - Attached 4th Worcester Regiment
Captain V. Gilliland - Attached 2nd Batt. Royal Irish Rifles
Lieut. G. Given - Royal Navy
Lieut. V. A. Gransden - Royal Irish Rifles
F. J. Guy - Princess Patricia's Canadian Light Infantry
2nd Lieut. J. H. M. Hadden - Royal Irish Rifles
Flt - Commander E G. Harvey - Royal Flying Corps
2nd Lieut. T. S. Haslett MC. - 17th Batt Royal Irish Rifles
S. Irvine - South African Field Force
J. Kennedy - Canadian Contingent
2nd Lieut. D. L. Kyle - Royal Engineers
F. Lawson
2nd Lieut. J. W. McCarter - Royal Inniskilling Fuisiliers
2nd Lieut. T. F. McCay - Royal Irish Rifles
Lieut. E. McClure - 10th Batt. Royal Inniskilling Fuisiliers
2nd Lieut. D. McConnell - Royal Flying Corps
Lieut. J. McCurdy - 9th Batt. Royal Inniskilling Fuisiliers
W. McLurg - Princess Patricia's Canadian Light Infantry
2nd Lieut. W. Maultseed - Royal Irish Rifles
2nd Lieut. E. C. Mee - 11th Batt. West Yorkshire Regiment
Lieut. Bruce Millar - 5th Batt. Royal Irish Rifles
Captain R. W. Mitchell - 2nd Batt. Royal Inniskilling Fuisiliers
2nd Lieut J. W. Montgomery - Royal Inniskilling Fuisiliers
Lieut. J. R. Moore - Connaught Rangers
D. Morgan - Royal Naval Division
Major H. Morrison - Machine Gun Corps
Private H. A. Mulholland - 75th Canadians
Captain H. D. S. O'Brien - Attached Royal Air Force
Trooper J. A. Pinkerton - North Irish Horse
Flt.- Commander L. Porter - Royal Flying Corps
J. L. Quigley - 9th Batt. Royal Inniskilling Fuisiliers
Lieut. R. Shannon - Canadian Infantry
2nd Lieut. W. M. Sheridan - 17th Batt. Royal Irish Rifles
2nd Lieut G. D. L. Smyth - Royal Irish Rifles
2nd Lieut. L. G. Stewart - 15th Royal Welsh Fuisiliers
Lieut. A. Stuart - 2nd Batt. Royal Munster Fuisiliers
2nd Lieut L. W. H. Stevenson M.C. - 9th Batt. Royal Inniskilling Fuisiliers
Captain C. G. Tillie - 1st Batt. Royal Inniskilling Fuisiliers
Corporal J. A. Walker - Royal Engineers
2nd Lieut. James Watson - 23rd Batt. Manchester Regiment
Lieut. G. C. Wedgewood - Machine Gun Corps
G. White - Grenadier Guards
Captain C. B. Williams - 3rd Batt. Royal Irish Rifles
Captain E. J. Williams - 3rd Batt. Royal Irish Rifles
Lieut. J. A. Williams - 3rd Batt. Royal Irish Rifles
G. Wilson - Canadian Contingent
2nd Lieut. V. J. E. Wilson - Royal Inniskilling Fuisiliers
Source: Our School Times Supplement, February 1919