Fleet Admiral
From STDW
A Fleet Admiral [C-5] is a Naval rank equivalent to an Army Field Marshal in seniority. A Fleet Admiral is typically senior to an Admiral and is the Commander in Chief of the Imperial Starfleet. Fleet Admirals are addressed by rank and name, though normally just as 'Admiral' and thereafter by subordinates as "Sir" or "Ma'am". The rank is usually abbreviated to "FADM".
