Iron Front: Liberation 1944 is a hardcore military sim set in the eastern front of World War II. It's created from the Arma II engine, so fans of that series should feel right at home.
When talking about WWII shooters, it's easy to think of games like Red Orchestra or the Call of Duty series, but Iron Front shouldn't be grouped together with those sorts of action-based games.
Iron Front is a slow-paced tactics simulation. Anyone looking for a run-and-gun game where they can brag about their kill/death ratio can just move on. If you are the type of person who enjoys spending half an hour moving a tank into position, then pull up a chair and stay awhile.