So kinda like a game I once played called Planetside. Just in this case way more realistic. Player in the game could create platoons and spawn vehicles and would fight over bases in a never ending war for territory. Each base had special qualities like air support, heavy armor, etc. Although the game was considered an MMOFPS would be an awsome mode to see in this game. Also in that game the battles could be up to 1000s of players at a time.
Not where I clicked to post this dont know how that happend >.< don't get mad i'm new!