https://www.pcgamer.com/rising-storm-2-vietnam-adds-64-player-campaign-mode-that-takes-place-over-11-battles/

Multiplayer FPS Rising Storm 2: Vietnam is getting an ambitious 64-player campaign that spans 11 battles. Between battles, each side votes on tactical decisions, such as where to attack, where to defend, and what faction they want to put on the frontline.

To win, you have to capture every territory on the overall tactical map or accrue more victory points, which you gain for winning individual maps. As you proceed through the battles, spread over 11 years, the equipment and commander abilities for both the northern and southern Vietnamese forces will change to reflect the real-life technological advancements and political events that happened during the Vietnam War.