https://youtu.be/FOqkVY_rcSo

Prepare for a Frosty Fight in Call of Duty: WWII’s first community event ? Winter Siege.
Receive free Supply Drops, join 2XP playlists, play limited-time content,
and collect special seasonal gear before Winter Siege ends on January 2nd 2018.

https://www.callofduty.com/wwii/winter-siege