John Gregson is quickly christened "Septic" as he (sort of) arrives a Royal Air Force airfield at the height of the Battle of Britain. Everyone there is knackered - exhausted by the war, weary, tired and scared. They are led by the motivating "Tiger" (a decent effort from Jack Hawkins) who has long since mastered the carrot/stick approach to his flyers who are often little more than boys straight out of school or university. "Septic" is keen - but will he remain so? Can he remain so? People are dying all around him! It's actually quite a complex drama this. Some fine aerial photography and…