This is a pretty simplistic romance. Girl finds boy, girl loves boy, girl loses boy, girl finds boy. Colleen Moore is the outstanding ingredient in this recipe, delivering a wonderfully varied dramatic/romantic performance, well deserving of an Oscar nom. Equally fine are the aerial combat special effects.
Moore plays a French girl whose mother has turned over their field to a British aerial squadron during WWI. She is the "daughter of the regiment", loved as a little sister. Into this mix comes a fill-in for a downed flyer, Gary Cooper. At first they hate each other, then they love each other, then the entire squadron is sent out on a suicide mission. Cooper returns but crashes in the village and a red cross unit removes him. Moore searches for him, is told at a hospital he is dead, then wanders the streets until he calls from a hospital window and they are reunited.
It's a nice little romance, but hardly more than that. Recommended for fans of Ms. Moore and Mr. Cooper