Techronomicon Techronomicon is a science fiction novel that examines far-future military actions from several different perspectives. Human beings have colonized several planets with help from the enigmatic and more technologically advanced Zhir, who gave spaceships and habitable worlds to those they deemed suitable and their descendants. The Joint Expeditionary Force is the military arm of the Universal Faith, called in when conflicts arise that the Faith decides are beyond the local government and militia and require their intervention. Leneveldt and Roader are JEF officers assigned to Operation Techronomicon, investigating what seems to be a Zhir-built defence shield around the planet Lassana. Another JEF company sent to Kalaabhavan after the murder of the planets Confessor-General loses its CO to a land-mine, and Lieutenant Hellerman reluctantly accepts command. Chevalier, a civilian pilot, takes refugees fleeing military-run detention camps on Ararat to a biological research station on otherwise uninhabited Lila. The biologists on Lila discover a symbiote that enables humans to photosynthesize, which comes to the attention of Operation Techronomicon and the JEF's Weapons Research Division. Leneveldt and Roeder, frustrated by the lack of progress on Lassana, are sent to Lila to detain the biologists, who flee into the swamps. Hellerman's efforts to restore peace on Kalaabhavan are frustrated by the Confessors, and his company finds itself besieged by insurgents. The novel explores individuals' motives for choosing or rejecting violence and/or military service; the lessons they learn about themselves and their enemies; and the possible results of attempts to forcibly suppress ideas.