This run down explains all various imperial army ranks within the Galactic Empire in order of their rank including some details of the army roles and duties for surface and territory commands within the Empire during its reign. All imperial army ranks information is sourced from material taken from Star Wars Legends.
Breakdown of all ranks covered:
Non-commissioned enlisted ranks:
1. Trooper Recruit (1st, 2nd & 3rd-grade Trooper)
2. Lance Corporal
Commissioned officer ranks:
5. Lieutenant Colonel
6. High Colonel
2. Grand Moff
3. Grand Admiral
3. Grand General
Long live the Empire!