Brad Pitt seems to be enjoying his time in World War II. So far he's been in Quentin Tarantino's Inglourious Basterds and David Ayer's upcoming tank film, Fury. According to Deadline he's looking at joining an untitled WWII romantic thriller that was scripted by Steven Knight.
There aren't many details on the story at this time, but with Knight and Pitt involved it should be a good one. Knight is the guy who wrote David Cronenberg's Eastern Promises, so I'm sure the script is going to be incredibly solid. As for the actor, he's currently developing a sequel to his zombie film, World War Z.