I'm researching my Grandfather and one of his brothers who died in the war. My Grandfather, Ivor Jones was in the Royal Welsh Fusiliers and was apparently involved in the liberation of Belsen, was briefly a lieutenant or corporal and I have other bits and pieces of information about him. I feel that like getting his service number would unlock more potential information. How would I do this based on family information passed down a generation? I have a bit more on his brother, Robert John Jones. He was serving with the 8th Kings Royal Irish Hussars and died on 19 August 1944. I have his service number (14374235) and have found his grave details. I also know his squadron number from a photo my Grandmother has. That is all I know. How would I find out more information about his time in the war?