This is in many aspects an ideal war film for its consistently documentary and realistic character, showing just how it was to get trained as an Air Force pilot. Not everyone made it, but those who didn't instead got the chance of proving the more indispensable for their supporting effort, in this case Richard Attenborough as the very young and green navigator. Although a documentary film with no real romantic thriller plot but just plain hands-on realism all the way, it is terrific at times and has some memorable scenes worthy of Powell-Pressburger. It was in fact written by Terrence Rattigan and directed by the famous Boulting brothers, who practically only accomplished masterpieces, usually totally realistic ones and not seldom of a documentary character. Besides Richard Attenborough, there is Edward G. Robinson, playing a part of an American instructor voluntarily without being paid, and another very young George Cole is among the crew. In brief, this is a very enjoyable and enriching film for its very positive and edifying character, and the music by Gordon Jacob also adds to its lasting interest and quality. It's a thriller, but it is real.