The Cobra Trilogy

Cobra warriors, a guerrilla force endowed with surgically implanted weapons and special guerrilla training, must learn the uses–and abuses–of their special abilities, as they launch a desperate, last-ditch attack on the alien Troft forces that are threatening Earth, in an omnibus edition containing the three novels of the Cobra Trilogy–Cobra, Cobra Strike, and Cobra Bargain. Reprint.