Marshal your command and prepare to fight any battle across the Inner Sphere! This volume focuses on the force a player will build and field through any level of play. Campaign Operations contains rules for creating and running a combat unit, form a down-on-their-luck mercenary outfit to a fully-supplier House regiment. The Formation Building rules provide tools to craft a wide variety of Inner Sphere lances and Clan Stars for any type of scenario. The volume also contains complete rules for devising solar systems to flesh out your settings. Inside, players will find several options for campaign play, including the most expansive Chaos Campaign rules ever published to date. Comprehensive maintenance, salvage, repair, customization, and design quirk rules bring the down-and-dirty action of a combat commander to life as each battle determines whether your campaign will end in victory or defeat!