There are a couple of games about WW1 and BoE is the great example of how they would look like.

Famous mechanics with new modern setting.

New addon with 4 campains telling the sad bloody story of penal battalions. Unknown side of WW2.

Got tired from WW2 games in favourite series? This game is just for you. This is the other war with other rules!

You favourite game, but enchanced and with steam features support, lot of new maps and multiplayer modes.

New nation, regions, units, equipment, missions with old and well-known style!

More than a hundred different fighting units: tanks, artillery, armored cars, planes,warships. 23 missions and 4 nations. Huge addon for a huge game!

Almost twenty missions of great RTS experience, fighting for Soviet, Allied of German forces in Europe and Northern Africa.