User blog comment:Damac1214/Call of Duty 2014 Being Developed by Sledgehammer Games, Call of Duty Moving to Three Year Development Cycle/@comment-3171236-20140207233419/@comment-115.132.34.178-20140212000356

Actually, there is few WW2 campaign we have not yet played.

1) Second Sino-Japanese War

2) Soviet-Japanese Conflict

3) German invasion of Poland and France