Overview
Ace of Aces, also known as Bird of Prey, is a 1933 American pre-Code war film based on the story "The Bird of Prey" by World War I pilot John Monk Saunders that explores how war can turn a man's moral compass from pacifism to warmonger. Starring Richard Dix, it was similar to many of the period films that appeared to glorify the "knights of the air", but was more complex, examining the motivations of those who choose to go to war.
Plot
When the United States enters World War I, Rocky Thorne has no interest in joining the military, but just wants to pursue his career as a sculptor. He is cynical about the purpose of the war and the enthusiasm of those who have enlisted, comparing them to lemmings that will swim until they drown themselves. But his fiancée, Nancy Adams, becomes a Red Cross nurse; she mocks his pacifism and accuses him of cowardice. To prove his bravery, he enlists and becomes a fighter pilot as part of the American Expeditionary Forces. Arriving at his assigned squadron, he is concerned about the people he is going to be shooting at; but his initial reluctance lasts only until he is shot at himself. Then he retaliates, shooting down his first enemy aircraft.
Rocky now renounces his past attitude and becomes completely committed to the war in the air, even taking individual flights against orders, to get more chances to shoot down Germans. In a few months he becomes the leading ace. Then, while on furlough in Paris, he runs into his former love, who is a nurse on the front lines. She has been impacted by her experiences and is torn by guilt. When Rocky says that he does not want to waste his valuable leave time on talking and demeans her moral attitude for not wanting to spend the night with him, she agrees to do it.
Back at the squadron, a German cadet on a mercy mission drops a note over the airfield, telling the Americans that one of their pilots who was shot down is alive as a prisoner. At this point Rocky's plane appears. Not having seen the note being dropped, Rocky attacks and shoots down the young German, who is badly injured but not killed.
From Wikipedia (CC BY-SA 4.0).