Call of Duty: Devil’s Brigade is a cancelled FPS that was in development by Underground Development (aka Z-Axis) from 2007 to 2009, for the Xbox 360 and Playstation 3. Activision closed the studio on February 11th, 2010. It’s possible that Call of Duty: Devil’s Brigade was cancelled to shift resources to Guitar Hero: Van Halen, that could have been a more profitable project for them. This game in the Call of Duty series would have been set in Italy during World War 2. This was meant to be CoD4 before it was cancelled.
Thanks to Hey Hey for the contribution! Some info from Kotaku and for a deeper article on this lost game, check The Verge!