lib_FotR-mappack.pak for Blitzkrieg 2 (maps of "liberation" and "Fall of the Reich" made to run with Blitzkrieg 2) Maps work with the GRM-mod too!
Multiplayer reinforcement-MOD (sorry this is only, no singleplayer)
Axis: Germany, Japan
Allies: USSR, USA, GB
added 3 multiplayer-maps
Xtra: paratroopers for elite-infrantry, and added recon-troops (spyglass-icon)
I'll make some pics of the reinforcement groups in the next days.
The official forum of the publisher CDV. Not very crowded thow...
A new website opened in 2010 there are some interesting tutorial-videos and various maps(packs) to download. The comunity seems to be nice too.
A spanish BK-site with huge database and a BK2 section as well some nice maps & minimods for download there. I don't speak spanish, so I can not tell anything about the comunity there.
A russian (I think so) fan site. no info, cause I don't understand a word russian!
I'll add others if I find them...