Though most Clans use Asshurs, only the Ghost Bears and Steel Vipers have deployed them in the Inner Sphere. They saw action in several engagements, the most notable being a raid by the mercenary company Armstrong's Archers in 3054. Under contract to the Federated Commonwealth, the Archers staged a raid against the Steel Vipers on Graus, encountering elements of the Thirty-eighth Phalanx 250 kilometers north of New Paris. A mixed Star of vehicles and ’Mechs faced off against the mercenary company, and the Inner Sphere commander expected a quick victory against the garrison unit.
Because the commander was unaware that one of the vehicles was an Asshur spotter vehicle, the mercenaries ignored the vehicles and launched a mass assault against the Star's two 'Mechs, perceiving them as the greater threat. The mercenaries' action freed the Vipers from the need to adhere to the strict rules of engagement, and the Asshur ran circles around the Inner Sphere 'Mechs, repeatedly designating the nearest for Arrow-IV artillery missiles inbound from a pair of tanks located several kilometers from the battlefield. No mercenaries survived the engagement.