Amongst other things, I know my old man was on some artillery duties for a time, most of his OS service was through various south-west Pacific Islands like PNG and Borneo..later on he was stationed in various parts of northern Australia and conducted practical jungle training exercises for troops before being deployed OS.
I don't have much use for the compass, I think I might clean it up and donate it to one of our local RSL Clubs. Most clubs have some sort of display of military bits and pieces.