Conversation so far:
what was imperial in regard to cassandra nova ?
Imperial Guard.
what was the imperial guard for?
Cassandra also made Lilandra send the Shi'ar Imperial Guard to wipe out the mutant population of Earth, starting with the X-Men.
was this successful?
The Guard fought the X-Men until they were able to show the truth to the Imperial Guard.
what was her greatest accomplishment?
Cassandra mentally forced the Xavier Institute student Beak to beat Beast into a coma.
what else happened after he was beat into a coma?
CANNOTANSWER.
what is the most important fact mentioned in this article?
Without a body, Cassandra became pure psychic energy, bodiless and blind.
Are there any other interesting aspects about this article?
Angered at Cassandra's treachery and realizing the danger she posed, the Imperial Guard fought Cassandra.

Question: did the guard win?
Self-contained rewrite: Did the Imperial guard win the fight with Cassandra Nova?