In 1916, childhood best friends, Bob Wilson and Fred von Bergen, are test pilots working for an American company that builds bombers for the European allies. Since he is German-born and faces prejudice against his heritage, Fred loses his job and, unable to find other employment, decides to return to Germany to fight for his homeland. Although he has no special attachment to the German cause, Bob quits the aviation company and joins his friend in Germany. On their way to a German airfield, Red Cross nurse Alida Hoffman accidentally runs Bob and Fred off the road, Both men are immediately drawn to Alida, especially Bob although Fred is more shy. After Bob's first unsuccessful mission, Captain Wolters, the squadron's tyrannical leader, expresses his doubt about his loyalty but, desperate for pilots, gives him another chance. As the United States is drawn into the war, instead of sending him into a crucial air battle, Wolters arrests Bob. Fred, heartbroken that Alida has chosen Bob, quarrels with his friend, calling him a coward. Later, however, Fred allows his friend to escape from a firing squad and flee to the Allied lines. To prove his allegiance, Bob leads British bombers to the German base, while Fred is told by Wolters that he must shoot down Bob to prove his loyalty. Neither man is capable of killing the other, and, in the end, Fred sacrifices his life for Bob. After the war, Bob returns to Germany to marry Alida. The newly married couple then returns to the United States, and pay their respects to Fred's mother.
Crimson Romance was a low budget production that relied on the large amount of footage that had been shot for Hell's Angels. The advantage of having Ben Lyon as the lead actor in both features allowed for intercutting between previously shot footage and new scenes that were shot at Wilson Airport in West Hollywood, California, owned by aviators Roy and Tave Wilson, the only airport that was exclusively devoted to film work. Lyon was filmed in a Royal Aircraft Factory S.E.5 that had been seen in numerous films. Crimson Romance was only allotted a short period of time for new scenes to be shot, resulting in a frenzied production schedule. Lyon was constantly on demand for filming and complained that the production company wanted a "limousine for the price of a Model T." One unusual scene in Crimson Romance blended together footage of Lyon in a British fighter bearing down on a German bomber. The scene showing the bomber was from Hell's Angels. Lyon was also in the German aircraft, with the improbable scenario of Lyon shooting himself down.
Reception
In his review for The New York Times, Frank Nugent, struggled with the unlikely choice of the film's title and its apparent romantic story, wrote: " There is more to 'Crimson Romance'... It is the not always believable, but generally interesting, story of two friends, one an American, the other a German, who enlist in the German air force in 1916."