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The Jouran system has three inhabitable planets. The capital of the system, Jouran, is a green and rich world governed by a hereditary aristocracy whose first-born children form most of the officer class of the regiments tithed here. Part of each noble family's obligation is to send at least one of its scions to serve in the PDF, where they serve a minimum five years training and fighting throughout the system and its environs. The best are recruited from these chosen companies for service with the Imperial Guard. To have a son or daughter chosen for service is considered a great honour and each noble house maintains its own detailed records of the heroic feats of its ancestors. The enormous hall of heroes of Jouran also contains records of all of those who have served in the regiments, as well as the actions of all the tithed regiments of Jouran.
Jouran III is a hot and industrialized world from which the majority of the regiments' manpower is recruited. It is also home for the factories producing the bulk of the Jouran Dragoons' equipment and vehicles.