Study guide
4.4 Rank Structure, Chain of Command, the NCO Support Channel, and Unit Organization
Army Promotion Board SGT/SSG
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1 The Promotion Board Process, Eligibility, and Preparation
1.1 AR 600-8-19 Board Eligibility, TIS/TIG Zones, and PME Requirements 1.2 Board Proceedings, Protocol, Uniform Inspection, and Boardroom Bearing 1.3 Promotion Points, the AFT Conversion, IPPS-A, and Monthly Cutoff Scores 1.4 Board Preparation: Study Plan, Current Events, and World Affairs 1.5 Situational Questions, ICTL Proficiency, and Board Scenario Technique
2 Uniform Standards, Grooming, and Awards (AR 670-1, AD 2025-18, AR 600-8-22)
2.1 ASU and AGSU Configuration, Insignia, Badges, and Awards Placement 2.2 Hair, Cosmetics, Fingernails, and Jewelry Standards (AD 2025-18) 2.3 Wear of Combat Uniforms, Duty Accessories, and Body Modification & Tattoo Policies 2.4 Facial Hair, Medical Exceptions to Policy, and Religious Accommodation 2.5 The Army Awards and Decorations System (AR 600-8-22)
3 Army Leadership & Doctrine (ADP 6-22 & FM 6-22)
3.1 The Army Leadership Requirements Model: Attributes and Competencies 3.2 Leadership Levels, Dynamics, Command Climate, and the Warrior Ethos 3.3 The Counseling Process (ATP 6-22.1 & DA Form 4856) 3.4 The Evaluation Reporting System & NCOER (AR 623-3 & DA Form 2166-9 Series)
4 Customs, Courtesies, and Military Traditions (AR 600-25 & TC 3-21.5)
4.1 Saluting Protocols, Courtesies to Officers, and Hand Salute Standards 4.2 National Flag Etiquette, Colors, Reveille, Retreat, and Honors to the Nation 4.3 Drill and Ceremonies Fundamentals (TC 3-21.5) and Formations 4.4 Rank Structure, Chain of Command, the NCO Support Channel, and Unit Organization
5 Army History, Heritage, and Creeds
5.1 Army Birthday, Continental Army Foundations, and Historical Milestones 5.2 Evolution of the NCO Corps and the Sergeant Major of the Army 5.3 Major American Campaigns and Military Battle History 5.4 The Army Values, The Soldier's Creed, and The NCO Creed
6 Army Programs, Command Policy, and Soldier Readiness
6.1 SHARP Under AR 600-52: Reporting Options, Complaint Processing, and the OSTC 6.2 The Military Equal Opportunity and Harassment Prevention Program (AR 600-20, Chapter 6) 6.3 Army Substance Abuse Program (ASAP) and SUDCC (AR 600-85) 6.4 Soldier and Family Support Programs: AER, Red Cross, ACS, EFMP, and BOSS 6.5 Suicide Prevention, Behavioral Health, and Resilience 6.6 Prohibited Activities: Extremism, Retaliation, Prohibited Relationships, and Political Activity 6.7 Retention, Reenlistment, and the Career Counseling of Subordinates
7 Tactical Combat Casualty Care & First Aid (TC 4-02.1 & ATP 4-02.83)
7.1 TCCC Phases of Care: Care Under Fire, Tactical Field Care, and TACEVAC 7.2 MARCH PAWS Assessment: Massive Hemorrhage and Airway Management 7.3 Respiration, Circulation, Shock, Burns, and Environmental Injuries 7.4 9-Line MEDEVAC Request Protocol and Tactical Evacuation Procedures
8 CBRN Defense & Force Protection (ATP 3-11.32 & AR 525-13)
8.1 CBRN Hazards, Chemical Agent Classifications, and Physiological Effects 8.2 MOPP Gear Levels, Protective Mask PMCS, and Decontamination 8.3 Antiterrorism, Physical Security, and Force Protection Conditions (AR 525-13)
9 Weapons, Land Navigation, and Physical Readiness
9.1 M4/M16 Rifle Characteristics, Clearing, Malfunctions, and Weapons Safety (TC 3-22.9) 9.2 Map Reading, Grid Coordinates, and Marginal Information (TC 3-25.26) 9.3 Land Navigation: Terrain Features, Azimuths, Intersection, and Resection 9.4 Holistic Health and Fitness, the Army Fitness Test, and the Combat Field Test 9.5 The Army Body Composition Program and the Waist-to-Height Standard (AD 2026-13) 9.6 Crew-Served Weapons, Sidearms, and Munitions
10 Military Justice, the Law of War, and Duty
10.1 The UCMJ, Article 15 Non-Judicial Punishment, and Courts-Martial 10.2 The Code of Conduct, the Law of War, and Rules of Engagement 10.3 Guard Duty, the Three General Orders, and Operations Security
11 Training Management and Unit Sustainment
11.1 Training Management: ICTL, the Digital Job Book, and Sergeant's Time Training 11.2 Maintenance, Supply Discipline, and Property Accountability
4.4 Rank Structure, Chain of Command, the NCO Support Channel, and Unit Organization
Key Takeaways Explain This Topic AI
The chain of command is the succession of commanders from superior to subordinate through which command is exercised; the NCO support channel parallels it and is used to execute orders and enforce standards, never to bypass it.
Enlisted grades run E-1 through E-9, warrant officer grades WO1 through CW5, and commissioned officer grades O-1 through O-10; a corporal is a noncommissioned officer while a specialist of the same pay grade is not.
Standard Army organization builds from team to squad to platoon to company to battalion to brigade to division to corps to field army, with a company commanded by a captain and paired with a first sergeant.
The NCO support channel runs from the Sergeant Major of the Army through command sergeants major, first sergeants, platoon sergeants, and squad and team leaders, and is defined in AR 600-20.
Board candidates must know the 24-hour military time convention and the NATO phonetic alphabet cold, because both are used to read back grid coordinates, call signs, and MEDEVAC information.
Last updated: September 2026
Rank Structure, Chain of Command, the NCO Support Channel, and Unit Organization
Core Principle: AR 600-20 (Army Command Policy) establishes both the chain of command and the noncommissioned officer support channel . Boards open with this subject because a Soldier who cannot recite their own chain of command has not prepared, and a Soldier who confuses the two channels does not understand where their authority comes from.
1. Enlisted Grades and Insignia
- Pay grade Title Abbrev. Insignia
- E-1 Private PV1 No insignia
- E-2 Private PV2 One chevron
- E-3 Private First Class PFC One chevron, one rocker
- E-4 Specialist SPC "Eagle" device (not an NCO)
- E-4 Corporal CPL Two chevrons ( the junior NCO grade )
- E-5 Sergeant SGT Three chevrons
- E-6 Staff Sergeant SSG Three chevrons, one rocker
- E-7 Sergeant First Class SFC Three chevrons, two rockers
- E-8 Master Sergeant MSG Three chevrons, three rockers
- E-8 First Sergeant 1SG Three chevrons, three rockers, lozenge (diamond)
- E-9 Sergeant Major SGM Three chevrons, three rockers, star
- E-9 Command Sergeant Major CSM Three chevrons, three rockers, star in a wreath
- E-9 Sergeant Major of the Army SMA Star flanked by two stars, with the Coat of Arms
The corporal/specialist distinction is a favorite board question. Both are pay grade E-4, but the corporal is a noncommissioned officer who exercises NCO authority and is part of the NCO support channel; the specialist is not . Note that the 6 March 2026 revision to AR 600-8-19 eliminated the requirement to laterally appoint a specialist to corporal upon integration onto the promotion recommended roster or upon graduation from the Leaders Course, and established a standalone lateral-appointment policy instead.
Also distinguish 1SG from MSG : both are E-8, but the first sergeant is the senior enlisted leader of a company and wears the diamond; the master sergeant is a principal staff NCO. The same distinction separates CSM (command position, wreathed star) from SGM (staff position, plain star).
2. Warrant and Commissioned Officer Grades
- Grade Title Insignia
- WO1 Warrant Officer 1 One silver bar, one black square
- CW2–CW5 Chief Warrant Officer 2 through 5 Silver bars with increasing black squares
- O-1 / O-2 Second Lieutenant / First Lieutenant Gold bar / silver bar
- O-3 Captain Two silver bars
- O-4 / O-5 Major / Lieutenant Colonel Gold oak leaf / silver oak leaf
- O-6 Colonel Silver eagle
- O-7 to O-10 Brigadier General through General One to four silver stars
Warrant officers are technical experts in a single specialty. Address them as Sir or Ma'am , or as Mister/Ms. [Last Name] ; CW2 through CW5 are addressed as "Chief."
3. Chain of Command vs. NCO Support Channel
Chain of command NCO support channel
Definition The succession of commanders from superior to subordinate through which command is exercised The channel of communication and supervision from the CSM to subordinate NCOs and enlisted Soldiers
Authority Command authority — the legal authority to order, punish, and commit the unit Derived authority to execute orders, enforce standards, and supervise
Typical membership Squad leader is not in it; runs company commander, battalion commander, brigade commander, division commander, up to the President SMA, CSMs at each echelon, 1SG, platoon sergeant, squad leader, team leader
- Purpose Decide, direct, and take responsibility Transmit, execute, train, and enforce
- Relationship Parallel and supportive — the support channel never replaces or bypasses the chain of command
AR 600-20 lists what the NCO support channel is used for: transmitting and executing orders; enforcing standards of performance, training, and conduct; supervising individual training; caring for Soldiers and Families; and advising commanders. It is not a route for a Soldier to bypass their commander.
The chain of command a candidate must know cold
Squad leader → platoon sergeant → platoon leader → first sergeant → company commander → battalion CSM → battalion commander → brigade CSM → brigade commander → division CSM → division commanding general → corps → Army Service Component Command → Chief of Staff of the Army → Secretary of the Army → Secretary of War → President of the United States.
Know your own by name and rank , and know the Sergeant Major of the Army — currently SMA Michael R. Weimer , the 17th SMA, who assumed the post on 4 August 2023.
4. Unit Organization
- Element Typical size Led by Senior NCO
- Fire team 4 Soldiers Team leader (SGT) —
- Squad 9–10 Soldiers Squad leader (SSG) —
- Section / platoon 16–44 Soldiers Platoon leader (1LT) Platoon sergeant (SFC)
- Company / battery / troop 62–190 Soldiers Company commander (CPT) First sergeant (1SG)
- Battalion / squadron 300–1,000 Lieutenant colonel Command sergeant major
- Brigade / regiment / group 1,500–3,200 Colonel Command sergeant major
- Division 10,000–18,000 Major general Command sergeant major
- Corps 20,000–45,000+ Lieutenant general Command sergeant major
- Field army 50,000+ General Command sergeant major
Terminology by branch: company in most branches, battery in field artillery and air defense, and troop in cavalry; a cavalry battalion is a squadron .
5. Military Time
The Army uses the 24-hour clock , spoken in four digits with no colon.
- Civilian Military Spoken
- 12:01 a.m. 0001 "Zero zero zero one"
- 6:30 a.m. 0630 "Zero six thirty"
- Noon 1200 "Twelve hundred"
- 5:00 p.m. 1700 "Seventeen hundred"
- 11:59 p.m. 2359 "Twenty-three fifty-nine"
Convert an afternoon time by adding 1200 . Time zones are appended as a single letter — Z for Zulu (Coordinated Universal Time), and L for local.
6. The Phonetic Alphabet
- A Alfa B Bravo C Charlie D Delta E Echo F Foxtrot G Golf
- H Hotel I India J Juliett K Kilo L Lima M Mike N November
- O Oscar P Papa Q Quebec R Romeo S Sierra T Tango U Uniform
- V Victor W Whiskey X X-ray Y Yankee Z Zulu
Numerals are pronounced individually, with "niner" for 9 to avoid confusion with the German nein , and "fife" for 5. You will use this alphabet to read back grid coordinates, call signs, and the line entries of a MEDEVAC request, so practice it aloud until it is automatic.
7. Duty Positions Attached to Grade
Team leader (SGT): the Army's first-line leader. Directly responsible for 3–4 Soldiers, their training, appearance, accountability, welfare, and equipment.
Squad leader (SSG): responsible for the tactical employment, training, and administration of a squad; the primary trainer of team leaders.
Platoon sergeant (SFC): the platoon's senior NCO and the platoon leader's primary advisor; owns platoon-level training, maintenance, and accountability.
First sergeant (1SG): the company's senior enlisted leader; enforces standards, runs the duty day, and advises the commander on all enlisted matters.
Command sergeant major (CSM): the commander's senior enlisted advisor at battalion and above; presides over promotion boards, sets the standard, and develops the NCO corps.