Call of Duty: WWII — United Front is an add-on for the first-person shooter in the Call of Duty series. United Front includes three new multiplayer maps: Stalingrad, Market Garden and Monte Casino. Each map focuses on a different battle that took place in the 1940s. In addition, four new heroes have appeared in zombie mode. Along with the expansion, Operation Supercharge was added to the game, which takes place outside of Europe.
The add-on requires the original version of Call of Duty: WWII.