The powerful technological order known as ComStar has controlled the flow of information and technology across the vastness of space for more than 200 years. This sourcebook for BattleTech describes the tactics, uniforms, and battle histories of the Corn Guards, their military division.

The Free Worlds League (FWL) field manual provides an extensive survey of House Marik's Free Worlds League, one of the major Inner Sphere military powers. The manual includes a full military history of the rebellion-riddled confederation, from the Succession Wars to the Andurien Civil War and beyond, and profiles of every League regiment, including the elite Marik Guard and the chivalrous Knights of the Inner Sphere. Also included are color renderings of FWL uniforms and insignia and special rules for new, exclusive League weapons and BattleMechs.