The Imperial Fleet regrouped and repaired near Annaj following the battle; several days after the defeat, Admiral Prittick notified the rest of the Empire of the crushing defeat. Presumably by that point, Prittick assumed command of the Fleet, however temporarily.
Following the Battle of Endor, Captain Gilad Pellaeon ordered the defeated Imperial fleet to retreat to this world, which was nearly two days distance traveling at Class One Hyperdrive speeds. The fleet spent several days regrouping and repairing at the planet.