My great Grandfather’s discharge papers claim he was “burned with mustard gas at Somme Dirke [sic] October 28, 1918. Wikipedia tells me the battle ended that September. Could there have been other skirmishes after that? Also that word “dirke” is my best guess. I’m not sure what it says. Image link: https://imgur.com/a/VtT4uzX
Hello there! As your question is related to looking for identification/information regarding military personnel, our Guide on Military Identification may be of use to you. It provides a number of different resources, including how to request service records from a number of national agencies around the world, as well as graphical aids to assist in deciphering rank, unit, and other forms of badges or insignia. While the users here may still be able to lend you more assistance, hopefully this will provide a good place to start!