Underground Hits was a couple compilations released on the German label Aggressive Rockproduktionen. A good collection of 80's hardcore from the U.S. and Germany.
Volume #1 was released in 1982. Side One is the 'Deutsche' (that's German for German) Side, featuring 4 German hardcore bands including Razzia and Chaos-Z. Side Two is the American side featuring 4 U.S. bands including Angry Samoans (the best hee, I think) and Bad Brains.
Volume #2 was released in '83 with 9 bands, only two of which are German, Canalterror and Spux. The remaining bands are from the U.S. including previously released material from bands like Angry Samoans, Meatmen and A.O.D.