Olivier's and Leigh's work with the troops during WW2
I'm doing a project in History class for my exams, and I'm going to write a 1000 word essay on Olivier and Vivien's work with the troops during WW2. I can't seem to find much info on this topic at all. Was Olivier a RAF pilot? Would anyone be able to provide any links or suggest any books that i could find relevant information in?