Allied tells the story of American spy Max Vatan (Pitt), who sparks a romantic relationship with French Resistance Marianne Beausejour (Cotillard) during a dangerous mission to kill a high-ranking Nazi official.
The film, which looks like a somewhat more serious version of Pitt's earlier WW2 film Inglourious Basterds crossed with Mr. & Mrs. Smith, follows the pair as they get married as part of their cover story, and then begin to fall in love as the mission progresses.
Pitt, who was previously married to Friends star Jennifer Aniston from 2000 to 2005, found love with Jolie while the two were filming their action comedy Mr. & Mrs. Smith in 2004. Pitt and Jolie began dating after his divorce and the two share six children. They couple only officially tied the knot in August 2014.