Assigned as First Officer on Darth Vader's flagship Executor, Captain Piett aids Admiral Ozzel in overseeing the crew, as well as helping to direct the entire fleet. He is given a battlefield promotion to Admiral and entrusted with command of the flagship and the fleet after Admiral Ozzel makes a fatal mistake at the beginning of the Imperial assault on the Rebel base on Hoth. Piett remains in command of the Executor through the Battle of Endor.