E1 - Private
(PVT)
E2 - Private
(PV2)
E3 - Private First Class
(PFC)
E4 - Specialist
(SPC)
E4 - Corporal
(CPL)
E5 - Sergeant
(SGT)
E6 - Staff Sergeant
(SSG)
E7 - Sergeant First Class
(SFC)
E8 - Master Sergeant
(MSG)
E8 - First Sergeant
(1SG)
E9 - Sergeant Major
(SGM)
E9 - Command Sergeant Major
(CSM)
E9 - Sergeant Major of the Army
(SMA)
W1 - Warrant Officer 1
(WO1)
W2 - Chief Warrant Officer 2
(CW2)
W3 - Chief Warrant Officer 3
(CW3)
W4 - Chief Warrant Officer 4
(CW4)
W5 - Chief Warrant Officer 5
(CW5)
O1 - Second Lieutenant
(2LT)
O2 - First Lieutenant
(1LT)
O3 - Captain
(CPT)
O4 - Major
(MAJ)
O5 - Lieutenant Colonel
(LTC)
O6 - Colonel
(COL)
O7 - Brigadier General
(BG)
O8 - Major General
(MG)
O9 - Lieutenant General
(LTG)
O10 - General
(GEN)
O11 - General of the Army
(GA)
* U.S Army Ranks are in structured order, based on the Department of Defense official website
https://www.defense.gov/Resources/Insignia/