Gray Death Legion

The Gray Death Legion is a mercenary company formed by Grayson Death Carlyle. It exists within the BattleTech Universe, appearing in multiple novels within the series. It begins as an offshoot of "Carlyle's Commandos," a mercenary unit formed by Grayson Carlyle's father. During fighting on Trell I, the unit suffered heavy losses and was reformed under Grayson Carlyle. Through subsequent actions it reached regimental strength and went on to face the clans and feature prominently in the Lyran Alliance civil war.

The novels are:

Decision at Thunder Rift Mercenary's Star The Price of Glory Tactics of Duty Operation Excalibur