2005 · ソースブック（プレイを拡張するルール／オプション）
Mercenaries Supplemental II
This campaign supplement explores the lesser-known mercenary units operating throughout the Inner Sphere, from renegades and freelancers to struggling outfits taking whatever work they can find. It expands Classic BattleTech campaigns with rules for creating mercenary forces, including non-BattleMech unit technology levels and special renegade and freelancer career paths. Additional guidance supports mercenary campaigns across multiple eras, including the Star League, Succession Wars, and contemporary BattleTech periods.
スキルベース（スキルを購入または獲得）属性／ステータス制（STR、CON、PERなど）ダイス（主にd10）
ゲーム情報（人数、プレイ時間、対象年齢、クレジット）の出典：BoardGameGeek。