Alan Farmer shoots down a German observation balloon, but spares the unarmed observer; he is told by Triggers to stay away from the balloons in future. Triggers is intending to recommend Farmer for a commission, but is disappointed with the response from his other officers. Bravington has reservations about his "suitability". Mills and Starling accept the news philosophically but there are signs of resentment from the NCOs. When a German plane drops a note about an injured British airman, Alan misunderstands his purpose and shoots down the German, gaining further criticism. After a disastrous interview, in which Alan’s background and academic record are picked over by the selection panel, he goes to a bar where he experiences further resentment from embittered members of an infantry division. Alan drinks with their sergeant, who is at first sympathetic, but then criticises Alan for not having killed the German observer, telling him that the balloon was quickly repaired. That same evening, Triggers is visited by the chairman of the selection panel, who wants to understand his reasons for recommending Alan for a commission. On Alan's next flight, he makes a point of attacking the German observation balloon again, this time killing the observer; to his surprise, Triggers seems pleased by his action. He then receives the news that he has been commissioned, and is welcomed into the officers' mess. (thetvdb.com)