The Space Barbarians

In three bloody years of spacewar, the "barbarians" of the hell-world Ragnarok had destroyed the Gern Empire—and freed the "civilized" planets of Earth and Athena from alien domination. But the Earthenians feared and hated the men of Ragnarok and resented the superhuman strength and speed which had won the victory. And when a new threat from beyond the stars struck at Ragnarok and left it desolate, the "barbarians" were stricktly on their own—abandoned to certain destruction by the rest of mankind!