No matter how space warships evolved, boarding assaults had always been the crowning tactic Astartes took the greatest pride in.
Especially when facing enemies stronger than themselves, boarding tactics could swiftly erase the technological gap between both sides and forcibly drag the enemy into the field Astartes excelled at most.
Within the relatively sealed, cramped spaces of a warship, a group of Astartes clad in power armor, wielding storm shields and deadly melee weapons such as power swords and chainswords, was a lethal nightmare to any enemy.
Even Orks, a race renowned for savage combat, would still be harvested like weeds when faced with an organized Space Marine boarding assault.
Ordinary humans might have been frail, but the Astartes forged by the Emperor were among the galaxy's most formidable close-combat warriors.
Not to mention that Lox's forces were all second-generation Astartes upgraded through Primaris enhancement, far stronger and more versatile than those "Firstborn" who had yet to undergo the upgrade.
Primaris Space Marines who possessed the Belisarian Furnace could, under suitable conditions, even achieve a complete victory over the "Firstborn."
Due to the limited number of Space Marines, most enemy warships faced only the Iron Men Legion's brutal internal assault.
War-model Iron Men and Sentinel Iron Men worked in concert, creating pressure no less overwhelming than that of Primaris Space Marines.
These cheap weapons of war feared no sacrifice. Even trading several units for a single Blade of the Celestials warrior was an absolute bargain.
Unfortunately, even in one-on-one combat, the vast majority of the Blade of the Celestials could not defeat Sentinel Iron Men.
These weapons of war could freely switch between mutant abilities and launch targeted attacks, tormenting the mutant powerhouses among the Blade of the Celestials beyond endurance.
Mutants qualified to join the Blade of the Celestials