The in-game event might give attending players a brief glimpse at what the WW2 version of the Warzone map will look like.
What little has been officially revealed about the Battle of Verdansk event does show that there will be some special objectives to be completed.
A special superweapon of unknown origin is going to appear in Verdansk during the event, which players will need to find and disable.
Participating in this live event will grant players exclusive items as souvenirs that won't be available any other way.
Warzone has seen integration with Call of Duty: Black Ops Cold War after launching alongside Modern Warfare.
This started with the addition of a new map and all of Cold War's weapons and operators, and culminated in a massive nuke event reshaping Verdansk itself to be on-par with the 80's setting.
Since the Vanguard reveal will be an in-game live event, it almost seems like this will be comparable to the previous nuke event.
Either way, we need not wait long to find out - the Battle of Verdansk will reveal Call of Duty: Vanguard tomorrow.
Call of Duty: Vanguard is expected to launch this November.