While Brad Pitt was filming Sony Pictures Entertainment's "Fury," his wife Angelina Jolie was directing her upcoming movie "Unbroken," which is about an Olympic athlete played by Jack O'Connell held captive by Japanese forces. Both movies have a World War II theme.

"I was studying the European theatre (of war); she was studying the Pacific theatre. I was studying tanks; she was studying bombers," Pitt told BBC on the red carpet during the recent closing of the annual BFI London Film Festival on Oct. 19, Sunday.

According to Pitt, he and his wife normally do not work at the same time and it was a lovely experience.

Prior to "Fury," Pitt also played a soldier in Quentin Tarantino's film "Inglourious Basterds."

Playing a WWII Sherman tank commander on a mission behind enemy lines in "Fury," the 50-year-old actor said the tank crew in the film has not really been "dissected before to this kind of detail."

He added that "war is hell" and "the accumulative psychic trauma that every soldier carries to some extent" was depicted by "Fury," which cost $68 million to make, the New York Times has learned.

On Oct. 15, "Fury" was released in the United Kingdom marking its European premiere. Along with his co-stars Jon Bernthal, Shia LaBeouf, Logan Lerman and Michael Pena, Pitt was warmly welcomed by hundreds of fans in Leicester Square.

For Bernthal, "Fury" is family drama as it is about "a family travelling through hell in a metal box."

According to Bernthal, there is one thing that was uniform in all of the soldiers they talked to, which is about "the release in the kill."

In an interview with Screen Rant, Bernthal said "the biggest part of sort of developing these characters is the relationships and the unbelievable preproduction process that we went through."

"You are in combat day in, day out. You've lost so many people. There's a release that you get of actually firing your weapon downrange, seeing your enemy combatant and taking their life," he added.