Sean,
You need your grandfather's Record of Service - it is the key to everything else, if you are starting from scratch and have no other information. You might also want to obtain from the appropriate Register Office, your grandparents' marriage certificate because that might show where he was based at the time of marriage and your father's place of birth might also give a clue, so get his birth certificate as well.
The Record of Service can be obtained from the RAF and somebody else will tell you the precise rules and how much it costs, as these things seem to change.
Have you searched for photograph albums, your granfather's war medals, his certificate of discharge etc and anything else which might pin down something about him.
Being very blunt about it, if my father was being difficult about telling me anything, I would be very caustic with him and tell him I wanted to know and resented him trying to prevent me finding out. What does your mother say about it?
From the date of death and the fact that your grandfather was still serving and appears in the CWGC registers, suggests that he might have been injured in an accident of some sort after the end of the war in Europe and subsequently died of his injuries. However, as I said get the Record of Service.
Good Luck and I'm sure others here will help you with their advice.
Colin Cummings
Bookmarks