Hello,
the presentation trailer is avalible here !
Now, I go to say the missions are confirmed in-game:
Axis campaing
Westterplate
Wizna
Warsow
Lwow
Modlin
Finland
Allied campaing
Mokra
Bzura
Warsow
Kock
Finland
Thank you.
In War in Europe: 1939 you will fight in missions of the World War II in 1939, including the Poland invasion and Winter War. Also you can fight in both sides: Axis and Allies.