2004 · ソースブック（プレイを拡張するルール／オプション）
A Guide to Covert Ops
This BattleTech sourcebook explores the covert operatives and intelligence agencies working behind the scenes of interstellar conflict. It details organizations across the setting and provides Life Paths for agents, infiltrators, guerrilla fighters, and other specialists. New espionage equipment, campaigning rules, and a complete adventure give players and Gamemasters tools for running special-operations missions involving sabotage, infiltration, and covert warfare.
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。