He was in hospital in Rouen for 3 days and moved on to Liverpool for 3 months starting in December 1916 but not sure why. He went back to army service in 1917 and was disembodied on 4 March 1919.
He claimed a pension stating he had pains in the back and weak eyes. The record does not note any suggestion of a connection between this claim and his spell in hospital. Condition worse than on demobilisation [I think that's what it says] Back pain was worse on exertion. Eats and sleep well.
I can't read all of the note of the medical examination, but it does note pulse 80, lungs clear, no creaking in any joints.
In summary his application for a pension was rejected as they couldn't find evidence of a condition leading to a bad back which could be attributed to his war service
(there is a fair bit of commentary about the state of his teeth and need for dentures)