In the structure of the Galactic Empire, the most senior officers within the different sections of the Imperial Navy were known as naval chiefs. Certain individuals from this group, along with the leading figures of the Imperial Army, held positions within the Joint Chiefs of the Imperial Military, which represented a more elevated tier. On a particular occasion, Emperor Palpatine chose to convene with a selection of his naval chiefs, specifically four admirals—three females and one male named Tallatz—aboard the Defiance starship, a mobile flight academy overseen by Commandant Pell Baylo.