I have a Cunningham Crossin, Crossan, Crosson, Born LIFFORD , Donegal Served in 64th Foot Regiment. Discharged age 27 1842 - 1851. Royal Chelsea and Kilmainham Hospitals. His age corresponds with a Cunningham Crossan who is the brother of my G G Grandfather. What would a foot soldier be and where would I find any info on this. Margaret Norman.