Sledgehammer Games’ unreleased, third-person Call of Duty game was internally titled Fog of War, the developer told IGN.

Set against a horrific Vietnam War backdrop, Fog of War was conceived as “Call of Duty with the play style of Uncharted,” Sledgehammer’s Michael Condrey told IGN. “It was really taking our passion for Call of Duty with our experience and expertise from Dead Space and bringing that together to offer fans a new Call of Duty way to play.”

Condrey explained that returning to Fog of War is still possible. “In our hearts, there’s probably a place for that game,” he said. “You never want to say in absolute terms that you wouldn’t go back to it.

Previously, Sledgehammer’s Glen Schofield explained that the demo was a15 minute gameplay slice built in about six months. Condrey explained that the demo “really gave you a great epic opening, some big moments, some compelling gameplay. There was something there we were pretty proud of.”

Call of Duty: Advanced Warfare is the game Sledgehammer eventually got to making, and you can learn all about its new features in our IGN First 

source: http://www.ign.com/articles/2014/09/10/sledgehammers-call-of-duty-vietnam-game-was-called-fog-of-war

What exactly is the so called "uncharted play style" he is talking about?

And how does COD+DeadSpace = Uncharted?

I would've loved to see that, hopefully they're able to do that with their next COD title in 3 years.

Cover based with guns with random easy puzzle thrown in. So Spec Ops The Line but it's CoD so probably with a crap story instead.

I'd guess anyway.

I would have loved to see that game happen! Also, wasn't this already posted? :S

Cinematic 3rd person action adventure game on big set pieces and lotso explozionz.

That woulda been a CoD I might have played.

Not that Acti would be willing to forego the annual FPS fest.

As interesting at this sounds the yearly releases kill any hype I'd have left for the CoD series.

this wouldnt have been a yearly release though. 

That sounds interesting, actually.