Fourth Fleet
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The Fourth Fleet is made up of over 600 offensive-capable spacecraft. Led by Commander Kronus from the battlestar Rycon, the Fourth Fleet repelled a major Cylon offensive (destroying three basestars) at the Battle of Cosmora Archipelago. During that battle the Rycon fell, and the ships of the Fourth Fleet are presumed destroyed either prior to or during the Battle of Cimtar (Take the Celestra).