The Ultimate Enemy — Fred Saberhagen

LIFE AGAINST DEATH

For countless millennia the dreadful Berserker fleets have ranged across the galaxy in a relentless war against all things living. Great irony is it indeed in this war of life against mechanism that while the purposes of Death are carried out by ultimately sophisticated devices, the cause of life is represented by one of the least evolved of intelligent species. For of all the starfaring races, only Man has brought with him untamed the heritage and instinct of battle; only Man can face The Ultimate Enemy