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.