The core rules treat Mechs and infantry very differently. The Companion harmonizes these systems. It introduces for infantry platoons and Precision Targeting for veteran MechWarriors. For the first time, you feel the difference between a Regular pilot and an Elite pilot beyond a +1 modifier.
Technical Readouts are for the wargame. The Companion is for the RPG. It provides construction rules for (ECM suits, stealth gear), Exotic Melee Weapons (Vibro-katanas, Retractable Blades), and Illegal Drugs/Chemicals used by the Capellan Confederation and the Draconis Combine. BattleTech- A Time Of War Companion.pdf