For Officers the ranks are:
Admiral of the FleetAdmiralVice AdmiralRear Admiral and Commodore 1st ClassCommodoreCaptainCommanderLieutenant
Sergeant Major of the Army
The highest non-commissioned rank in the army is typically called the Command Sergeant Major (CSM). This rank serves as the senior enlisted advisor to the commanding officer and is responsible for the welfare, discipline, and training of enlisted personnel. The CSM is the highest-ranking enlisted member within a unit or battalion.
The highest enlisted pay grade for all US military services is E-9. The the link below for DoD Pay Chart.
The highest enlisted pay grade for all US Military services is E-9. The the link below for DoD Pay Chart.
Command Sergeant Major is the highest enlisted rank in the US Army
The highest two-star army rank that one can achieve is Major General.
In the US Army, General.
Senior NCO (E-7 through E-9)
As of October 2023, there have been 16 individuals who have served as the Sergeant Major of the Army (SMA) since the position was established in 1966. The role was created to serve as the senior enlisted advisor to the Chief of Staff of the Army and represents the enlisted ranks at the highest levels of the Army. Each Sergeant Major of the Army has contributed to shaping the policies and direction of the Army's enlisted force.
If needed in Afghanistan- or anywhere else.
The Army Chief of Staff is the highest ranking officer in the peacetime Army. The highest raning NCO is the Sergeant Major of the Army.
SPC is an abbreviated form of the rank of Specialist, which is the highest lower enlisted rank before one becomes a noncommissioned officer.