The latest game in the series, Men of War: Assault Squad has had it's steam group reach 10,000 members, and as a result the devs have released an open beta of the game. You need to have Steam and a Steam account to use it however.

http://www.digitalmindsoft.eu/forums/viewtopic.php?f=109&t=7986

I personally can't get the game to start after installing it but maybe you folks will have better luck.