Not sure whether someone will be able to help or not. My sister in law has a medal on one side WELTKRIEG 1914-1915 ERINNERUNG AN DIE KRIEGSHAFT DOUGLAS ISLE OF MAN . On the other side is the IOM three legged symbol and an engraving of tents and chalets a lighthouse and a castle all ringed in barbed wire. Any help or advice where to find out what this was for would be great.