Military rank/Legends

The rank was the established order of commanding responsibility between the officers of an Army or Navy.

Galactic Republic
The highest rank in the Grand Army of the Republic was the Commander-in-chief, who, in fact, was the Supreme Chancellor Palpatine himself, because of the Senate will.

The Jedi Order members also had military ranks, the highest was the High General, given to the Jedi Council members, such as Yoda, Mace Windu or Obi-Wan Kenobi.

Confederacy of Independent Systems
The highest rank in the Droid Army was the Supreme Commander, held by Grievous.

Rebel Alliance
The highest rank in the Rebel Military was the General. Two known Rebel generals were Roons Sewell and Jan Dodonna.

Galactic Empire
The highest rank in the Imperial Army was the Grand General and the Grand Admiral in the Imperial Navy.

Malcor Brashin was an Imperial Grand General and Mitth'raw'nuruodo, Gilad Pellaeon or Morlish Veed are examples of famous Grand Admirals.