A new power wakens in the Forest of Fear. It is December 1944 and the Reich is on the verge of collapse. As the Allies rumble to a halt on the very borders of Germany and settle into winter quarters in the quiet Ardennes sector, Hitler plans one last, bold counterstroke to crush and humiliate his enemies. In an ancient subterranean city, beneath the dreaded Forest of Fear, a new generation of wonder weapons has been developed by his trusted Cult of the Black Sun - and now the Fuhrer intends to use them to hurl the Allies back into the sea! As an assault of forbidden technology and supernatural horror is about to be unleashed on the unsuspecting Allies, will you fight or succumb to the inexorable rise of the Black Sun? Rise of the Black Sun is the first campaign book for Achtung! Cthulhu Skirmish.