Buy the PDF. Load it onto your tablet. Learn the Vehicle DNI rules. And remember—in the 31st century, you do not just pilot a 'Mech. You are the 'Mech. The Companion simply shows you how.
For campaigns operating in the Jihad era or involving the mysterious Word of Blake, the Companion features detailed rules for cybernetic enhancements, prosthetic limbs, and implants. BattleTech- A Time Of War Companion.pdf