Its starts as British soldiers storming the beach in america in San Francisco, in the near future, US has turned on the UK and Europe, they are now against each other and fighting for each others land, the US has killed many innocent Europeans and now they are fighting back. (You get to create your character and there name)
Scene 4: More Reinforcements
Soldiers sneak into a quiet town, they feel like this could be a trap and they may get ambushed. they have to look out for anything that moves and potentially shoot whatever moves. They get ambushed by people in windows and cars, they try to fight them off but they have to run instead, there are too many of them.
Scene 5: Preparation
The soldiers play the Americans game and ambush them. They find Intel on where their bases are and their secret camps, once they find this they wait for reinforcements and prepare to fight. They find some of the camps this leads to more camps that they can find a destroy.
Scene 6: WW3
The Germans, French, Spanish and the Italians all set to land in the US they all have their own jobs to do, the US citizens are scared for their life, the US army and government are treating their own people badly, not giving them food or water, the rest of the world is watching the Russians and the Chinese may help the Americans to make this a World War 3.
Everyone is preparing and training for the war getting all weapons ready, all soldiers ready, sending troops out to kill and find more Americans
Today is the day, the war starts everyone is in battle, the war lasts a very long time, you will need to survive through the war, completing the story missions, completing the mission objectives, eventually you win the war and save as many US civilians as you can.