Call Of Duty: Warzone is here, bringing a new event, five new maps, weapons, and more.Call Of Duty: Warzone Season Four landed today, bringing with it a whole host of changes. The main event is a new limited-time event called Ground Fall, which requires players to secure sat-link zones to find falling satellite locations.Looting satellites will see players pick up exclusive gear and rewards, including emblems, calling cards and a weapon charm.