Question: The Yellow Birds is a 2017 American war film directed by Alexandre Moors and based on the novel "The Yellow Birds" by Kevin Powers, the film stars which American actor, that made his feature film debut in Francis Ford Coppola's independent film "Tetro" (2009)? 
Sentence (from "Alden Ehrenreich"): In 2016, he starred as Hobie Doyle in the Coen brothers comedy "Hail, Caesar!
Relevant evidence: No