Pay grade	E-9			E-8		E-7	E-6	E-5	E-4		E-3	E-2	E-1
Insignia	No Insignia
Title	Sergeant Major of the Army	Command Sergeant Major	Sergeant Major	First Sergeant	Master Sergeant	Sergeant First Class	Staff Sergeant	Sergeant	Corporal	Specialist	Private First Class	Private E2	Private E1
Abbreviation	SMA	CSM	SGM	1SG	MSG	SFC	SSG	SGT	CPL	SPC	PFC	PV2	PV1
NATO Code	OR-9	OR-9	OR-9	OR-8	OR-8	OR-7	OR-6	OR-5	OR-4	OR-4	OR-3	OR-2	OR-1

This chart represents the U.S. Army enlisted rank insignia with seniority decreasing left-to-right inside a given pay grade. All ranks of Corporal or Sergeant and higher are considered non-commissioned officers (NCOs).

The rank of Specialist is a soldier of paygrade E-4 who has not yet attained non-commissioned officer status. It is common that a soldier may never be a Corporal and will move directly from Specialist to Sergeant, attaining NCO status immediately. It is also common to see a soldier who never moves above corporal to be honorably discharged after three years with no recommendation for promotion.

In each command of company sized units and smaller, there is assigned a senior enlisted who is monitor and advocate of the Enlisted Personnel to the commanding officer. This position is known as the First Sergeant, though the person carrying that title does not have to be the rank of First Sergeant (it is the highest ranking enlisted person in the company). In a battalion or larger unit, the senior enlisted man is a Command Sergeant-Major. The rank of Sergeant-Major is usually carried by one person in a battalion or larger unit, known as the Operations Sergeant-Major.

In terms of command, the rank of a person determines what job and command he/she has within a unit. For most personnel in the Infantry, a Bradley Infantry Fighting Vehicle (M2A2) is commanded by a Staff Sergeant, the gun is manned by a Specialist or Sergeant and the driver is Specialist or below. For the Armor, the Abrams Main Battle Tank (M1A2) is commanded by a Staff Sergeant, the gunner is a Sergeant, the loader is a Specialist and the driver is a Specialist or below.

Military ranks of the United States Army | Military insignia

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