Complex sentence: The Gray Death Legion return to Hesperus but this time to protect the facility during the raveges of the FedCom Civil War, once Sky Separatist launch a major assault, their survival, even as Katharine's most beloved merc unit comes into question.
Split into simpler sentences: The Gray Death Legion return to Hesperus but this time to protect the facility during the raveges of the FedCom Civil War. Once Sky Sepertist launch a major assault, their survival, even as Kathrine's most beloved merc unit, comes into question.