BattleTech: The Fourth Succession War Military Atlas Volume 2 (1989)

From the back of the book:

Here is told, in strategic terms, the history of the ware from January 3029 to January 3030. The campaigns, the tactics, and the battles themselves, compiled from reports by the commanders and MechWarriors who fought them

Full-color maps depict the movement of forces, battlefield terrain, and the cities and other objectives they fought for. BattleForce statistics are included for 50 key regiments, such as the Genyosha and the Kell Hounds. Hundreds of BattleTech engagements can be generated from these stats using a simple conversion table.