Inner Sphere Designation for Clan BattleMechs
Sarna News
When the Inner Sphere first encountered Clan OmniMechs (and later second-line BattleMechs) they were not privy to the designations each machine was known by among the Clans. They assigned code names based on the appearance or capabilities in order to define the units encountered. Interestingly, even a century later after the Inner Sphere learned the proper name for these units, the initial designations continue in common use.
The Inner Sphere would occasionally continue to assign code names to Clan BattleMechs even beyond the initial Clan Invasion. Though rare, the Clans have assigned code names to unfamiliar 'Mechs as well, as with the Society Septicemia OmniMech.