Practically every 1st XV and 2nd XV player at the club had joined the colours on the outbreak of the First World War. From those who volunteered, forty-nine past and present players gave their lives:-

W. Adamson W. Alder B.Alexander
R.E. Atkinson J.A. Bagnall E. Batey
W. Braidford P.Braidford J.Brydon
T. Burn T.W. Burn T. Cathrae
W. Coulson W.Elliott J.M. Emerson
B.D. Gibson J. Grierson N.F. Humphries
W. Jefferson S.H. Kent D. Little
F.O.Mail A. Morrison W.M.B. Nanson
F. Nevison N. Oxland A. Patterson
L.D. Plummer G. Potts R. Rayner
M. Reed A.G. Richardson C. N.Ridley
John W. Robinson G.S. Robinson Jos.W. Robinson
John Robson James Robson W.J. Robson
J.R. Robson A. Snowdon H.J. Spencer
W. Summers W.R. Thew A. Thompson
D.T. Turner E. Walton G.P. Walton
I. Whittaker

For a small rugby club this was a massive toll, and testament to the loyalty of the men, both to the country and their comrades.
The death toll included a number of the club’s finest players – as well as that of “Sammy”, the half-bred Border terrier who had become the mascot of the 1914 cup-winning team and had gone off to the war with them. Of those fifteen players in that Tynedale team which had won the Northumberland Senior Cup in 1914 five did not survive the war – W. Braidford, P. Braidford, F. Nevison, G. Potts and G.P. Walton.
The gallantry of those who served had been rewarded by no fewer than thirty-five medals, including five DSO’s, fourteen Military Crosses, two DCM’s, and, not least the Croix de Guerre, Croix de Chevalier and Medaille Militaire awarded to Tynedale men as battle honours by the French.
In January 1921 the club honoured the fallen by opening a new pavilion at the north end of its Dene Park ground in Hexham as a memorial to those who had lost their lives. The new building had been a former Army hut, bought out of the proceeds of a subscription list launched the previous year and erected by voluntary labour.
At the opening ceremony, performed by the President of the Northumberland Rugby Union, Harry Welford, a brass tablet bearing the names of the forty-nine men who had given their lives, presented by the club President, George Gibson, was dedicated by the Rector of Hexham, the Rev. J.V.C. Farquhar. The plaque is now displayed in Tynedale RFC’s present clubhouse at Tynedale Park, Corbridge, alongside another commemorating the twenty-seven past and present players who died in the 1939/45 Second World War.