https://www.gamespot.com/articles/call-of-duty-ww2s-blitzkrieg-community-event-is-li/1100-6458309/

A new community event is underway in Call of Duty: WWII on PS4, Xbox One, and PC. For a limited time, players can take part in the Blitzkrieg event, which introduces a new game mode, weapons, and more to the online shooter.

The Blitzkrieg event will run until May 8 and features a new, limited-time mode called Ground War. This game type will only be available for the duration of the community event and pits two teams of nine players against each other across Team Deathmatch, Kill Confirmed, Domination, and War modes.