The British campaign
There is no British campaign that I know of, this is just an idea I'd love to see.
Imagine Sean Bean in place of Alec Baldwin and you command British forces in Germany when the Russians come over the Berlin Wall. SA80's, Lynx and Sea King Helicopters, Challenger tanks.
If the makers of World in Coflict are reading this, this would be absolutly awesome. Especially with 'Mother Russia' by Iron Maiden in it.