Only used in time of war

Equal or higher rank than those commanding armies from other nations

The last officers to hold this rank served during and immediately following WWII

(Addressed as "General")

Senior level of Commissioned Officer

Typically has over 30 years of experience and service

Commands all operations within their geographical area

The Chief of Staff for the Army is a four-star General

(Addressed as "General")

Typically commands corps-sized units

(20,000 to 45,000 Soldiers)

(Addressed as "General")

Typically commands pision-sized units

(10,000 to 15,000 Soldiers)

(Addressed as "General")

Serves as Deputy Commander to the commanding general for Army pisions

Assists in overseeing the staff's planning and coordination of a mission

(Addressed as "Colonel")

Typically commands battalion-sized units (3,000 to 5,000 Soldiers)

CSM as principal NCO assistant

Also found as the chief of pisional-level staff agencies

(Addressed as "Lieutenant Colonel" or "Colonel")

Typically commands battalion-sized units (300 to 1,000 Soldiers)

CSM as principal NCO assistant

May also be selected for brigade and task force Executive Officer

(Addressed as "Major")

Serves as primary Staff Officer for brigade

and task force command regarding personnel,

logistical and operational missions

(Addressed as "Captain")

Commands and controls company-sized units (62 to 190 Soldiers)

Instructs at service schools and U.S. Army Combat Training Centers

Usually a Staff Officer at the battalion level

(Addressed as "Lieutenant")

A seasoned lieutenant with 18 to 24 months service

Leads weapons platoons and indirect fire centers

Usually Executive Officer of a company-sized unit (110 to 140 Soldiers)

(Addressed as "Lieutenant")

Typically the entry-level rank for most Commissioned Officers

Leads platoon-size elements consisting of the platoon SGT

With two or more squads (16 to 44 Soldiers)

Master-level technical and tactical experts

Support battalion, brigade, pision, corps, and major command operations

Provide leadership development, mentorship, advice, and counsel to WOs and officers

Special WO leadership and representation responsibilities within their commands

Senior-level experts in their chosen field

Primarily support battalion, brigade, pision, corps, and echelons above corps operations

Mentorship responsibilities and provide essential advice to commander on WO issues

Advanced-level experts who perform primary duties of a technical and tactical leader

Provide direction, guidance, resources, assistance, and supervision as necessary

Primarily support operations levels from team or detachment through brigade

Commissioned officers as provided by the President of the United States

Intermediate level technical and tactical experts

Performs duties and responsibilities at the detachment through battalion levels

Appointed by the Secretary of the Army

Technically and tactically proficient

Duties are technical leader, trainer, operator, manager, maintainer, sustainer, and advisor