In the Navy, the ranks are (in ascending order) Ensign, Junior Lieutenant, Lieutenant, Lieutenant Commander, Commander, Captain, Rear Admiral (lower half), Rear Admiral (upper half), Vice Admiral, Admiral, and Fleet Admiral.
In the Army and Air force, the ranks are (in ascending order) Second Lieutenant, First Lieutenant, Captain, Major, Lieutenant Colonial, Colonial, Brigadier general, Major General, Lieutenant general, General, and general of the army (or air force).
An adjutant is an assistant, a bird in the genus Leptoptilos, or a lower-ranking officer who assists a higher-ranking officer with administrative affairs.
admiral
The following link will provide an illustration of the high-ranking officer in the Terracotta Army.
The most Senior Ranking Officer regardless of service
The highest ranking officer in the Army is the Army Chief of Staff. The current Army Chief of Staff is General Martin Dempsey.
lieutenant 
The officer would typically report to a higher-ranking officer within their department or chain of command. This higher-ranking officer would have the authority to address any issues regarding who is in charge or "the boss."
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The Attorney General
Lightoller was the second officer on board the Titanic. He was the highest ranking officer to survive the disaster.
A captain's superior is typically called their commanding officer or a higher-ranking officer.
I think you must receive a spartan officer rank for the new ranking system