High Admiral

High Admiral is an Imperial rank that is considered the highest possible rank of the Imperial Navy with the exception of the rank of Grand Admiral. The rank of High Admiral is also junior to the military-political rank of Moff.

An Imperial High Admiral is typically in command over groups of fleets to which the High Admiral commands several subordinate Fleet Admirals. The Imperial Army equivalent of the rank of High Admiral is known as Surface Marshal. A rank of High General does exist, but is considered the equivalent of a Fleet Admiral.

Behind the scenes
While an actual High Admiral has never been seen in a Star Wars film, several unoffical publications have speculated on the appearance of the rank's insignia. Sources from the time frame of Star Wars Episode IV: A New Hope indicate that the insignia for High Admiral is very similar to that of Moff. Literature from Star Wars Episode V: The Empire Strikes Back proposes the rank insignia to be the same as Fleet Admiral, however with the display of one code cylinder to the right of the rank badge instead of two on either side.