On 1 May 3052, over twenty Galaxies from seven Clans clashed with twelve Armies of ComStar's Com Guards. For twenty-one days, one of the largest campaigns in BattleMech warfare unfolded to decide the fate of the Inner Sphere. The Battle of Tukayyid brings players back to this gargantuan conflict, allowing them to relive one of BattleTech's most pivotal moments. It builds off of the Chaos Campaign framework to unleash a massive experience players will enjoy across dozens of games. Each of the seven campaigns within includes the following: a short fiction entry and write-up of the battle, including a map of the regions; the specific Combatants involved, along with insignia; and details to allow players to play out each campaign on their tabletop. Finally, a technical readout section showcases Mech variants that first appeared during this conflict.