Berserker the Ultimate Enemy

Long ago, in a distant part of the galaxy, two alien races met—and fought a war of mutual extinction. The sole legacy of that war was the weapon that ended it: the death machines, the BERSERKERS. Guided by self-aware computers more intelligent than any human, these world-sized battle craft carved a swath of death through the galaxy—until they arrived at the outskirts of the fledgling Empire of Man.

These are the stories of the frail creatures who must meet this monstrous and implacable enemy—and who, by fighting it to a standstill, become the saviors of all living things. 

With help from wherever they can find it, including World War I fighters and stomatopods, earth descended humans face the ultimate enemy of all life.

A Saberhagen classic book length collection of the nine Berserker stories: The Smile, Pressure, The Annihilation Of Angkor Apeiron, Inhuman Error, Some Events At The Templar Radiant, Starsong, Smasher, The Game, Wings Out Of Shadow.