Great to see Scoot team up with David again.  According to Deadline:

“EXCLUSIVE: Scoot McNairy has been set to join Brad Pitt in Netflix’s war-on-terror-themed black comedy War Machine. Last seen in Gone Girl, McNairy reunites here with Pitt and his Plan B partners after he worked with them on Killing Them Softly and 12 Years A Slave. He worked with War Machine helmer David Michod on The Rover.”

No info on which character he is to play, so stay tuned.