The Eclipse Navy... its image is like the Imperial Navy but a lot more extreme than the Old Empire. Methods used by this navy are too extreme and many don't really question it because the Eclipse Navy already has everyone deceived into thinking they're methods are "peaceful" but they are blind. This navy isn't peaceful and you know it.
—Mysterious underworld figure explaining the Eclipse Navy
The Eclipse Navy was a branch of the Eclipse Military that was entrusted with naval operations within its controlled regions of the galaxy, including all naval assets. It was under the command of the Naval Command's Fleet Command and High Council's Grand Commander, sometimes Angel would take a major role within the Navy as Supreme Head of the Military.
The Eclipse Navy was formed out of the remains of the Imperialist Alliance navy and had refitted each and every one of its warships with better armament and shielding, even issuing differen uniforms but a little similiar to those of the Imperial Navy during the days of the Old Empire. New warships used by the New Empire such as Tachibana's own Eclipse-class warships, which were made to serve within a highly classified fleet that was commissioned by Angel secretly. Unlike the Imperialist Alliance navy, the Eclipse Navy submitted its members with extreme courses that ensured their loyalty as well as their moral, making each member of the Navy extremely dangerous and loyal to Angel.