Zahn, Timothy.
Summary: Earth had won its war with the alien Troft by using the formidable Cobra warriors, who had high-tech weaponry implanted in their bodies, invisible but deadly. Generations later, colony worlds settled after the war have grown doubtful that the Cobras are worth the high expense of their equipment and training. That was a mistake.
Format: text
Publisher / Publication Date: Baen Books 2011