My Grandfather served from 1914 -17 and suffered lung damage from a gas attack. He survived the War but died later, a relatively young man in his thirties, as a consequence of frequent pulmonary illnesses.
I never met my Grandfather and my questions were pushed away with the reply;
‘We don’t talk about the War.’
Sometime ago, I wrote a short piece of fiction of one grandfather’s war experience as told to his grandchildren at Christmas. You may like to read it here.