|Ben Lyon||Monte Rutledge|
|James Hall||Roy Rutledge|
|John Darrow||Karl Armstedt|
|Lucien Prival||Baron Von Kranz|
|Frank Clarke||Lt. von Bruen|
|Roy Wilson||Baldy Maloney|
|Douglas Gilmore||Capt. Redfield|
As World War I breaks out in Europe, Roy and Monte, two brothers studying at Oxford University, enlist in the Royal Flying Corps to fight for queen and country, while their college friend Karl is drafted in Germany. A love triangle involving Monte, Roy, and Roy's girlfriend, Helen, the brothers' disparate personalities, and Monte's cowardice in the face of war soon threaten to compromise a top-secret bombing mission over German territory.