From publisher blurb:
Since the coming of the Clans, the military, industrial, and command complexes of the Inner Sphere have raced against the invaders—and each other—to out-produce one another in battle-worthy manpower and materiel. Factories that were smashed in the Succession Wars were reborn and revitalized, churning out ever more cutting-edge equipment, while academies expanded their curriculums and sent generations of fresh warriors into battle. At the pinnacle of the arms race, new wars erupted, first against the Clans, and then between the Great Houses and Periphery states of the Inner Sphere. In the fires of the Word of Blake Jihad, destruction reached a level not seen since the early Succession Wars…but the stricken realms persevered.
Objectives: The Clans describes the state of the major factories, training centers, and command centers of the Clans in the wake of the events described in Jihad Hot Spots: Terra. Including detailed stats on every key system, this supplement also includes basic rules to help guide players in developing BattleTech scenarios focused on defending—or attacking—these critical sites.