The United States Army uses various personnel management systems to classify soldiers in different specialties which they receive specialized and formal training on once they have successfully completed Basic Combat Training (BCT). Enlisted soldiers are categorized by their assigned job called a Military Occupational Specialty (MOS). MOS are labeled with a short alphanumerical code called a military occupational core specialty code (MOSC), which consists of a two-digit number appended by a Latin letter. Related MOSs are grouped together by Career Management Fields (CMF). For example, an enlisted soldier with MOSC 11B works as an infantryman (his MOS), and is part of CMF 11 (the CMF for infantry). Commissioned officers are classified by their area of concentration, or AOC. Just like enlisted MOSCs, AOCs are two digits plus a letter. Related AOCs are grouped together by specific branch of the Army or by broader in scope functional areas (FA). Typically, an officer will start in an AOC of a specific branch and move up to an FA AOC. Warrant officers are classified by warrant officer military occupational specialty, or WOMOS. Codes consists of three digits plus a letter. Related WOMOS are grouped together by Army branch. The Army is currently restructuring its personnel management systems, as of 2019. Changes took place in 2004 and continued into 2013. Changes include deleting obsolete jobs, merging redundant jobs, and using common numbers for both enlisted CMFs and officer AOCs (e.g. "35" is military intelligence for both officers and enlisted).

Immaterial & Personnel Special Reporting Codes

Officer Warrant Enlisted

Infantry Branch (IN)

Officer Enlisted

Corps of Engineers Branch (EN)

Officer Warrant Enlisted

Field Artillery Branch (FA)

Officer Warrant Enlisted

Air Defense Artillery Branch (ADA)

Officer Warrant Enlisted

Aviation Branch (AV)

Officer Warrant Enlisted

Cyber Corps (CY)

Officer Warrant Enlisted

Special Forces (SF)

Officer Warrant Enlisted

Armor Branch (AR)

Officer Enlisted

Signal Corps (SC)

Officer Warrant Enlisted

Information Network Engineering Functional Area (FA 26)

Effective 1 October 2016, Functional Areas 24 and 53 were merged into FA 26. Officer

Judge Advocate General's Corps (JA)

Officer Warrant Enlisted

Information Operations Functional Area (FA 30)

Officer

Military Police Corps (MP)

Officer Warrant Enlisted

Strategic Intelligence Functional Area (FA 34)

Officer

Military Intelligence Corps (MI)

Officer Warrant Enlisted

Finance & Comptroller Branch (FC)

Officer Enlisted

Psychological Operations Branch (PO)

Officer Enlisted

Civil Affairs Branch (CA)

Officer Enlisted

Space Operations Functional Area (FA 40)

Officer

Adjutant General's Corps (AG)

Officer Warrant Enlisted Recruiting

Public Affairs Functional Area (FA and CMF 46)

Officer Enlisted

Academy Professor Functional Area (FA 47)

Officer

Foreign Area Officer Functional Area (FA 48)

Officer

Operations Research/Systems Analysis (ORSA) Functional Area (FA 49)

Officer

Force Management Functional Area (FA 50)

Officer

Army Acquisition Corps (FA and CMF 51)

Officer Noncommissioned Officer

Nuclear and Counter WMD Functional Area (FA 52)

Officer

Chaplain Corps (CH)

Officer Enlisted

Simulation Operations Functional Area (FA 57)

Officer

Army Marketing Functional Area (FA 58)

Officer

Strategic Plans and Policy Functional Area (FA 59)

Officer

Medical Department Branches

Medical Corps (MC)

Officer

Dental Corps (DC)

Officer

Veterinary Corps (VC)

Officer Warrant

Medical Specialist Corps (SP)

Officer

Nurse Corps (AN)

Officer Skill Identifier

Medical Service Corps (MS)

Officer Warrant

Medical CMF

Enlisted

Health Services FA

Officer

Laboratory Sciences FA

Officer

Preventive Medicine Sciences FA

Officer

Behavioral Sciences FA

Officer

Chemical Corps (CM)

Officer Warrant Enlisted

Logistics Corps

As of 1 Jan 2008, all officers from Quartermaster, Transportation and Ordnance branches who have attended the Captain's Career Course, with the exception of EOD officers (89E), are transitioned to the Logistics branch. Officer

Transportation Corps (TC)

Officer Warrant Enlisted

Ammunition CMF, Mechanical Maintenance CMF & Ordnance Branch (OD)

Officer Warrant Enlisted

Quartermaster Corps (QM)

Officer Warrant Enlisted