Game modes are periodically moved across the map, which allows players to place war assets in different locations. (bitcultures.com)
The main objective in Mass Effect 3 is the collection of War Assets for the inevitable last stand against the Reapers, as you go out to complete missions and side - missions, you will unlock new forces based on the choices that you make. (monstervine.com)
After each game is complete, you can manually or automatically deploy war assets that help attack or defend pieces of the map, and the majority of assets per segment will claim the territory per round. (bitcultures.com)