US Military Rank Abbreviations

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ARMY | COAST GUARD | MARINE CORPS | NAVY

Air Force

Rate Rank Abbrev. Rate Rank Abbrev.
E-1 Airman Basic AB O-1 Second Lieutenant 2d Lt
E-2 Airman Amn O-2 First Lieutenant 1st Lt
E-3 Airman First Class A1C O-3 Captain Capt
E-4 Senior Airman SrA O-4 Major Maj
E-5 Staff Sergeant SSgt O-5 Lieutenant Colonel LtCol
E-6 Technical Sergeant TSgt O-6 Colonel Col
E-7 Master Sergeant MSgt O-7 Brigadier General BrigGen
First Sergeant 1stSgt O-8 Major General MajGen
E-8 Senior Master Sergeant SMSgt O-9 Lieutenant General LtGen
First Sergeant 1stSgt O-10 General Gen
E-9 Chief Master Sergeant CMSgt O-10 General of the Air Force  
First Sergeant 1stSgt
Command Chief Master Sergeant CCMSgt
Chief Master Sergeant
of the Air Force		 CMSAF

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Army

Rate Rank Abbrev. Rate Rank Abbrev.
E-1 Private PVT O-1 Second Lieutenant 2LT
E-2 Private PV2 O-2 First Lieutenant 1LT
E-3 Private First Class PFC O-3 Captain CPT
E-4 Specialist SPC O-4 Major MAJ
Corporal CPL O-5 Lieutenant Colonel LTC
E-5 Sergeant SGT O-6 Colonel COL
E-6 Staff Sergeant SSG O-7 Brigadier General BG
E-7 Sergeant First Class SFC O-8 Major General MG
E-8 Master Sergeant MSG O-9 Lieutenant General LTG
First Sergeant 1SGT O-10 General GEN
E-9 Sergeant Major SGM General of the Army  
Command Sergeant Major CSM
Sergeant Major of the Army SMA
     
W-1 Warrant Officer WO1
W-2 Chief Warrant Officer 2 WO2
W-3 Chief Warrant Officer 3 WO3
W-4 Chief Warrant Officer 4 WO4
W-5 Master Warrant Officer 5 WO5

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Coast Guard

Rate Rank Abbrev. Rate Rank Abbrev.
E-1 Seaman Recruit SR O-1 Ensign ENS
E-2 Seaman Apprentice SA O-2 Lieutenant Junior Grade LTJG
E-3 Seaman SN O-3 Lieutenant LT
E-4 Petty Officer Third Class PO3 O-4 Lieutenant Commander LCDR
E-5 Petty Officer Second Class PO2 O-5 Commander CDR
E-6 Petty Officer First Class PO1 O-6 Captain CAPT
E-7 Chief Petty Officer CPO O-7 Rear Admiral (Lower Half) RADM (LH)
E-8 Senior Chief Petty Officer SCPO O-8 Rear Admiral (Upper Half) RADM (UH)
E-9 Master Chief Petty Officer MCPO O-9 Vice Admiral VADM
Command Master Chief Petty Officer MCPOC O-10 Admiral ADM
Master Chief Petty Officer
of the Coast Guard		 MPCO-CG  
     
W-2 Chief Warrant Officer CWO-2 CWO-2
W-3 Chief Warrant Officer CWO-3 CWO-3
W-4 Chief Warrant Officer CWO-4 CWO-4

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Marine Corps

Rate Rank Abbrev. Rate Rank Abbrev.
E-1 Private Pvt O-1 Second Lieutenant 2ndLt
E-2 Private First Class PFC O-2 First Lieutenant 1stLt
E-3 Lance Corporal LCpl O-3 Captain Capt
E-4 Corporal Cpl O-4 Major Maj
E-5 Sergeant Sgt O-5 Lieutenant Colonel LtCol
E-6 Staff Sergeant SSgt O-6 Colonel Col
E-7 Gunnery Sergeant GySgt O-7 Brigadier General BGen
E-8 Master Sergeant MSgt O-8 Major General MajGen
First Sergeant 1stSgt O-9 Lieutenant General LtGen
E-9 Master Gunnery Sergeant MGySgt O-10 General Gen
Sergeant Major SgtMaj
Sergeant Major of the Marine Corps SgtMajMC
     
W-1 Warrant Officer WO-1
W-2 Chief Warrant Officer 2 CWO-2
W-3 Chief Warrant Officer 3 CWO-3
W-4 Chief Warrant Officer 4 CWO-4
W-5 Chief Warrant Officer 5 CWO-5

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Navy

Rate Rank Abbrev. Rate Rank Abbrev.
E-1 Seaman Recruit SR O-1 Ensign ENS
E-2 Seaman Apprentice SA O-2 Lieutenant Junior Grade LTJG
E-3 Seaman SN O-3 Lieutenant LT
E-4 Petty Officer Third Class PO3 O-4 Lieutenant Commander LCDR
E-5 Petty Officer Second Class PO2 O-5 Commander CDR
E-6 Petty Officer First Class PO1 O-6 Captain CAPT
E-7 Chief Petty Officer CPO O-7 Rear Admiral (Lower Half) RDML
E-8 Senior Chief Petty Officer SCPO O-8 Rear Admiral (Upper Half) RADM
E-9 Master Chief Petty Officer MCPO O-9 Vice Admiral VADM
Master Chief Petty Officer of the Navy MCPON O-10 Admiral ADM
      O-11 Fleet Admiral FADM
W-1 Warrant Officer First Class WO1
W-2 Chief Warrant Officer Second Class CWO2
W-3 Chief Warrant Officer Third Class CWO3
W-4 Chief Warrant Officer Fourth Class CWO4
W-5 Chief Warrant Officer CWO5

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