Western society is split up into nine castes, from Lower-Lower to Mid-Lower all the way up to the privileged Upper-Upper. Mauser himself was born a Mid-Lower. Ambitious, he had chosen one of the few professions, Category Military, where upward mobility was still a reasonable possibility. To prevent any chance of a ruinous war between the West and the Sov-world, the Universal Disarmament Pact had restricted the military to pre-1900 technology. Gradually, powerful corporations began settling business disputes by hiring troops to fight real battles or fracases on one of many military reservations. This served a dual purpose: to maintain a military well-honed by actual combat and to provide the decadent general population with a diversion. The life-and-death struggles are so popular that they are televised.