I often come across this type of thing. The Cahir memorial is littered with it. 'They' the people who compiled it, don't and won't tell you the criteria for inclusion. I found men who died of wounds after discharge from the army and other men who died long after the war and even some lads with their name mis-spelled but the powers that be, put him on a memorial, to confuse us all.
Regards.
Tom.