Garrett Hedlund is in advanced talks to co-star in Ang Lee’s Iraq war drama “Billy Lynn’s Long Halftime Walk” for TriStar.

The “Life of Pi” director has tapped newcomer Joe Alwyn to star in the title role, based on the Ben Fountain novel. “Billy Lynn” will be co-financed by Jeff Robinov’s Fosun-backed Studio 8, together with Chinese distribution company Bona Film Group.

The story centers on 19-year-old private Billy Lynn and his company, who survive a harrowing battle that’s captured by news cameras. They are brought home by the U.S. administration for a promotional tour, culminating at the halftime show of a Thanksgiving Day football game — while facing an imminent return to the war.

Hedlund will portray the leader of the Bravo Company squad, Sgt. Dime.

Lee is using the Sony F65 camera and shooting in native 3D, high resolution and with an ultra-high frame rate of 120 frames per second — with the aim of creating for audiences the heightened sensations that soldiers experience.

Hedlund’s credits include the upcoming “Pan,” directed by Joe Wright; Angelina Jolie’s recent “Unbroken”; and William Monahan’s “Mojave,” which is premiering at the Tribeca Film Festival.

He is repped by WME and Brillstein Entertainment Partners.

News about Hedlund was first reported by Deadline.com.