http://www.imdb.com/title/tt0064072/combined
This might help....
t's good that some "stars" do not have big roles. Michael Caine whilst being "hot box office" is shot down - many pilots who seemed invincible were lost. A number of the parts are based on real characters Robert Shaw's is based on Adolf 'Sailor' Malan - 74 Squadron Ace, Susannah York's Harvey is based on one Felicity Hanbury (who later became the Commandant of the WRAF). The scene where she has to deal with a bombed slit trench is based on what happened when Biggin Hill was attacked. Being burned and still being alive was one of the biggest risks - sitting next to a tank of 100 octane whislt being shot at was risky.