Fury follows the tank crew, of the same name -- featuring Brad, Shia, Logan Lerman, Jon Bernthal and Michael Pena -- as they lead one last offensive against the waning Nazi forces in 1945. The mobile band of brothers called those tanks their home during their mission, and the living conditions were meager at best.
"This film focuses so much on the psychological hardships of men dealing with those extreme conditions," Brad told ET.
The 50-year-old Oscar winner plays a hard-nosed commander named Wardaddy, and director David Ayer made sure to keep the actor's appearance as authentic as possible. This meant extra time in the makeup chair, getting sprayed with fake blood and greasy face paint.
The film's authenticity was also deeply important to Shia.
"My dad's a veteran, so I always had respect for it," he said. "It's all very emotional."
Fury opens October 17.