For five years the Inner Sphere has known war on a scale not seen in centuries, with the militaries of literally every faction seeing action to one extent or another. Now, as relative peace appears to be settling over the Inner Sphere, a review of the forces of the BattleTech universe can be made. BattleTech Field Manual: Update updates all ten Field Manuals, including a history section that will bridge the gap between where the appropriate Field Manual left off and the ‘current’ time, as well as a complete and current TO&E for all factions. Updated random ’Mech assignment tables for all factions are also included.