My grandfather Denis survived the war having served with the Irish Rifles on a Machine Gun Corps in Frnace.
The cardmedal certificate dated 1915-18 includes his serial number: 1038S.S. O'Neill
<a rel="nofollow" class="external free" href="http://www.europeana1914-1918.eu/en/contributions/3649">http://www.europeana1914-1918.eu/en/contributions/3649</a>