Claud was a graduate of Trinity College Dublin. He was a Lieutenant in the Lancashire Fusilier when he was killed in World War I on July 1, 1916. Communiques in his military files explain the circumstances:
"Informant states that on July 1st 7.30 a.m. at Thiepval Lt. Noyes took his platoon over the parapet to attack German trenches. About 1 1/2 hours later his servant crawled back wounded and said that he had left Lt. Noyes wounded very badly. At 6 p.m. a corporal from A Coy [company] came over and on being asked if he had seen 'Percy' he said 'yes in a shell hole dead'."
A following communique stated: "Our Battalion attacked Thiepval on the 1st July and failed. On Sunday the 12th November we found a very large number of bodies and buried them. The Chaplain of the 15th Lancs. Fus. with Lt. Grebble and Lt. Lord did the burying. The bodies had been lying more than four months and were quite unrecognizable, except by their paybooks, officers belts and such like. Some of the bodies are lying there yet as we couldn't finish, for we were ordered up to attack Beaumont Hamel. The boys made crosses out of timber and put them up with their (the dead soldiers) names. Mr. Noyes got wounded straight away starting on July 1st and Pte. Hough stayed with him. We identified Lt. Noyes but did not find Hough to know. I saw Mr. Noyes' cross with his name on it, on the right of Hammerad Sap leading up to the Sunken road near Tjiepval.