Invasion 1944 is a historically accurate World War Two total conversion mod for ARMA 2: Combined Operations(ARMA2 + Arrowhead) centering on the European theater.
The mod started as a revolution back in early OFP days, was finally ready in Arma II and is now heading for Arma III. Generally it is the only full WWII mod so it is awesome, but the little drawback IMHO is the rather LQ models & skins for such capable game engine. On the other hand, this is a must for a MP centred total conversation modification.
I wish the SS Stormgrenadiers would had different camouflage not only the Sumpftarn. Fun fact: the creator's avatar has a German Wehrmacht soldier head model in it from the OFP version which was released only in unfinished demonstration form.