
Īlmost simultaneously with the attack on Kathil, the Death Commandos supposedly attacked the New Avalon Institute of Science.

Though they had been reduced to seven members, the remaining Death Commandos would form the core around which their unit would rebuild. In truth, nine managed to return from the mission, although two of them would never pilot a 'Mech again. In the resulting battle with the 1st Kathil Uhlans, the Death Commandos were believed to be completely wiped out. Unfortunately, the intelligence provided to them had been supplied by Justin Xiang Allard, a double-agent who passed along a warning of the attack to FedCom forces.

Near the end of the Fourth Succession War, with no other troops to spare, the Death Commandos along with the 4th Tau Ceti Rangers were sent to raid Kathil in 3029 as part of a daring and desperate attempt to hold back the Federated Commonwealth juggernaut. During this time the Death Commandos were battalion-sized in strength and their primary base of operation was Grand Base. The Death Commandos participated in the invasion of Stein's Folly and the capture of Redfield in 3025. As part of Maximilian's efforts to play both sides off each other, in 3003 he agreed to open the Death Commandos to the qualified personnel from the CCAF, bringing in more traditional tactics to the Death Commandos' repertoire. However the unit remained a bone of contention between the regular CCAF and the Warrior Houses. When Tormax Liao was overthrown by Maximilian Liao, much of the unit was destroyed defending the Chancellor over two nights of quiet fighting with Maximilian's Warrior House allies, though it was quickly reconstituted afterwards and swore loyalty to the new Chancellor. Each member of the Death Commandos was a multiskill soldier, trained both as MechWarriors and in black ops, and sworn by blood oath to defend the Chancellor and destroy all enemies of the Confederation. This created an elite and fanatically loyal unit which also benefited from the unique training regimen imposed by the Warrior Houses. The Death Commandos were created by Chancellor Tormax Liao in 2988, initially by drawing troops from the Warrior Houses. For example, they are allowed, on their own authority, to summarily execute any Capellan soldier, and even members of the nobility, under certain circumstances.

Unofficially known as the Chancellor's "storm troopers", members of the Death Commandos have very wide latitude in the performance of their duties. Their skills and wide-ranging authority raised misgivings even within the CCAF, which were partially satisfied when Chancellor Maximilian Liao opened membership to any sufficiently distinguished CCAF officer in 3003. They are meant to counterbalance the Warrior Houses (which exist outside of the regular Capellan military and are loyal directly to the person of the Chancellor), and appease feelings of jealousy within the CCAF by giving the military a similarly prestigious and capable unit. The absolute elite of the Capellan Confederation Armed Forces (CCAF), the Death Commandos are among the most feared units in the Inner Sphere.
