Time War - Clash with the Past

“BREAKING NEWS! There has been an accident in the Time Machine Factory! Portals have opened around the globe and hostile armies from history are attacking us!” Every person from timelines such as the Viking age, wild west, middle-age as well as modern times, have been stripped away from their consciousness and will wreak havoc within the clash of timelines. Thus they have become our enemies and your only duty is to assemble an army by making soldiers from factories and fight for the sake of the current timeline!