These are the U.S. Army ranks in use today and their equivalent NATO designations.

Commissioned Officers:

There are several paths to becoming a commissioned officer including the United States Military Academy, Reserve Officers' Training Corps, and Officer Candidate School. Certain professions, such as physicians, nurses, lawyers, and chaplains are commissioned directly into the Army. But no matter what road an officer takes, the insignia are the same.

Address all personnel with the rank of general as "General (last name)" regardless of the number of stars. Likewise, address both colonels and lieutenant colonels as "Colonel (last name)" and first and second lieutenants as "Lieutenant (last name)."

US DoD Pay Grade O-1 O-2 O-3 O-4 O-5
Insignia US-OF1B.svg US-OF1A.svg US-O3 insignia.svg US-O4 insignia.svg US-O5 insignia.svg
Title Second Lieutenant First Lieutenant Captain Major Lieutenant Colonel
Abbreviation 2LT 1LT CPT MAJ LTC
NATO Code OF-1 OF-2 OF-3 OF-4

US DoD Pay Grade O-6 O-7 O-8 O-9 O-10 Special
Insignia US-O6 insignia.svg US-O7 insignia.svg US-O8 insignia.svg US-O9 insignia.svg US-O10 insignia.svg US-O11 insignia.svg
Title Colonel Brigadier General Major General Lieutenant General General General of the Army
Abbreviation COL BG MG LTG GEN GA
NATO Code OF-6 OF-7 OF-8 OF-9 OF-10

Warrant Officers:

Warrant Officers are single track, specialty officers with subject matter expertise in a particular area. They are initially appointed as warrant officers (in the rank of WO1) by the Secretary of the Army, but receive their commission upon promotion to Chief Warrant Officer Two (CW2).

Technically, warrant officers are to be addressed as "Mr. (last name)" or "Ms. (last name)." However, many personnel do not use those terms, but instead say "Sir", "Ma'am", or most commonly, "Chief".

US DoD pay grade W-1 W-2 W-3 W-4 W-5
Insignia US-Army-WO1.png US-Army-CW2.png US-Army-CW3.png US-Army-CW4.png US-Army-CW5.png
Title Warrant Officer 1 Chief Warrant Officer 2 Chief Warrant Officer 3 Chief Warrant Officer 4 Chief Warrant Officer 5
Abbreviation WO1 CW2 CW3 CW4 CW5
NATO Code WO-1 WO-2 WO-3 WO-4 WO-5

Enlisted Personnel:

Sergeants are referred to as NCOs, short for non-commissioned officers. Corporals are also non-commisioned officers, and serve as the base of the non-commissioned Officer (NCO) ranks. Corporals are also called "hard stripes", in recognition of their leadership position. This distinguishes them from specialists who might have the same pay grade, but not the leadership responsibilities.

Address privates (E1 and E2) and privates first class (E3) as "Private (last name)." Address specialists as "Specialist (last name)." Address sergeants, staff sergeants, and sergeants first class as "Sergeant (last name)." Address higher ranking sergeants by their full ranks in conjunction with their names.

US DoD Pay grade E-1 E-2 E-3 E-4 E-5 E-6
Insignia No Insignia US Army E-2.svg US Army E-3.svg US Army E-4 SPC.svg US Army E-4.svg US Army E-5.svg US Army E-6.svg
Title Private Private Private
First Class
Specialist Corporal Sergeant Staff
Abbreviation PVT ¹ PV2 ¹ PFC SPC ² CPL SGT SSG
NATO Code OR-1 OR-2 OR-3 OR-4 OR-4 OR-5 OR-6
¹ PVT is also used as an abbreviation for both Private ranks when pay grade need not be distinguished
² SP4 is sometimes encountered in lieu of SPC for Specialist. This is a holdover from when there were additional specialist ranks at higher pay grades.

US DoD Pay grade E-7 E-8 E-9
Insignia US Army E-7.svg US Army E-8 MSG.svg US Army E-8 1SG.svg US Army E-9 SGM.svg US Army E-9 CSM.svg US Army E-9 SMA.svg
Title Sergeant
First Class
Sergeant Major
Sergeant Major
of the Army
Abbreviation SFC MSG 1SG SGM CSM SMA
NATO Code OR-7 OR-8 OR-8 OR-9 OR-9 OR-9

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