User blog comment:AntiScootaTwo/Call of Duty: Advanced Warfare confirmed to be set in 2054/@comment-5670680-20140503084707/@comment-3171236-20140503184736

Militaries probably won't build mechs, but exoskeletons, which are like mechs on a smaller scale, could find some use there.

Of course, tracked and wheeled drones, as well as auto-attack helicopters might be more used in battle.