5.2 Enlisted Force Structure (AFH-1 Section 7B)

Key Takeaways

  • The enlisted force structure has three distinct tiers: junior enlisted (AB, Amn, A1C, SrA), NCO (SSgt, TSgt), and SNCO (MSgt, SMSgt, CMSgt).
  • Junior enlisted Airmen progress through the Airmanship Continuum of 100 (BMT), 200 (Technical Training), and 300 (First-Term Airmen Center).
  • Staff Sergeants typically earn the 7-skill level; Technical Sergeants are often a unit's technical experts and must complete the NCO Academy before assuming Master Sergeant.
  • Official terms of address are grade-specific: Technical Sergeant may be addressed as Technical Sergeant, Tech Sergeant, or Sergeant; a Chief Master Sergeant is Chief Master Sergeant or Chief, not Sergeant.
  • The chapter ADTC chart lists 7B as B for both SSgt and TSgt, while the Section 7B header prints C for TSgt — study TSgt items as application of the tier rules, not recall alone.
Last updated: August 2026

Quick Answer: AFH 1 Section 7B organizes the enlisted force into three distinct tiers — junior enlisted (AB through SrA), NCO (SSgt and TSgt), and SNCO (MSgt, SMSgt, and CMSgt) — each with official abbreviations, terms of address, and a leadership focus. Junior enlisted Airmen move through Airmanship Continuum 100/200/300. Technical Sergeants remain NCOs, are often the unit's technical experts, and must complete the NCO Academy before assuming Master Sergeant.

ADTC and the extra TSgt application

The opening ADTC lists 7B as B for both SSgt and TSgt. The Section 7B header prints B for SSgt and C (Applying) for TSgt. Those rows do not match. Study SSgt as Understanding and TSgt as Applying — who is still an NCO, who has crossed into SNCO operational competence, which PME gate blocks the next grade.

Do not invent time-in-grade or time-in-service dates. Section 7B does not publish promotion timelines.

Why the structure exists

Paragraph 7.4: the USAF needs a consistent, well-defined set of expectations, standards, and growth opportunities for all Airmen, regardless of rank or specialty. The structure is the framework for meeting the mission while developing foundational and occupational competencies. It comprises three distinct and separate tiers, each correlating to increased education, training, and experience, which build proficiency, leadership, and managerial responsibilities.

CMSAF and CCM roles are listed in Section 7C, not 7B.

Three-tier enlisted structure

Focus in the table is the handbook's tier-level job, not a civilian paraphrase.

TierRanksFocus in AFH 1Written abbreviationsOfficial terms of address
Junior enlistedAirman Basic, Airman, Airman First Class, Senior AirmanAdapt to the military; profession of arms; occupational proficiency; productive membership; home-station and expeditionary readinessAB, Amn, A1C, SrAAB: Airman Basic or Airman. Amn: Airman. A1C: Airman First Class or Airman. SrA: Senior Airman or Airman
NCOStaff Sergeant, Technical SergeantExpert technicians; leaders, supervisors, managers, and mentors; keep self and subordinates trained, qualified, and readySSgt, TSgtSSgt: Staff Sergeant or Sergeant. TSgt: Technical Sergeant, Tech Sergeant, or Sergeant
SNCOMaster Sergeant, Senior Master Sergeant, Chief Master SergeantLeaders in the profession of arms; advise, supervise, mentor, and develop junior enlisted Airmen and NCOs; technical, operational, and organizational decision-makingMSgt, SMSgt, CMSgtMSgt: Master Sergeant or Sergeant. SMSgt: Senior Master Sergeant, Senior, or Sergeant. CMSgt: Chief Master Sergeant or Chief

An item that folds Master Sergeant into the NCO tier, or Staff Sergeant into the SNCO tier, is testing whether you kept the three tiers distinct and separate.

Junior enlisted tier and Airmanship Continuum 100/200/300

Initial enlisted accessions enter this tier and are introduced to the foundational competencies. They focus on adapting to the military, being part of the profession of arms, achieving occupational proficiency, and learning to be productive members of the USAF. In this tier, Airmen are trained, qualified, and ready to operate at home station and in an expeditionary environment, and they prepare for increased responsibilities. Junior enlisted Airmen progress through the Airmanship Continuum of 100 (BMT), 200 (Technical Training), and 300 (First-Term Airmen Center). ALS is the SrA-to-SSgt gate, not Continuum 100/200/300.

Airman Basic and newly enlisted Airmen. Airmen Basic, and Airmen who initially enlist as Airman or Airman First Class, are primarily adapting to the military profession, acquiring knowledge of USAF standards, customs, and courtesies, and striving to attain occupational proficiency under close supervision. Abbreviation AB; address Airman Basic or Airman.

Airman. Continues learning and adapting; expected to understand and conform to military standards, customs, and courtesies; begins to show occupational proficiency at basic tasks; still requires significant supervision and support. Abbreviation Amn; address Airman.

Airman First Class. Fully complies with USAF standards; devotes time to increasing skills in the career field and the military profession while becoming an effective team member. Continued supervision is essential. Typically, the 5-skill level is earned at this grade. Abbreviation A1C; address Airman First Class or Airman.

Senior Airman. Commonly perform as skilled technicians and trainers; begin developing supervisory and leadership skills through progressive responsibility, individual study, and mentoring; strive to establish themselves as effective trainers using guidance from officer and enlisted leaders. Senior Airmen must complete Airman Leadership School before assuming the grade of Staff Sergeant. Abbreviation SrA; address Senior Airman or Airman.

NCO tier — and the TSgt application

The NCO tier is only Staff Sergeant and Technical Sergeant. NCOs continue occupational growth and become expert technicians while developing as leaders, supervisors, managers, and mentors in the profession of arms. They keep themselves and subordinates trained, qualified, and ready to deploy and operate at home station and in an expeditionary environment. They understand and internalize foundational competencies in preparation for increased responsibilities, and they pursue professional development through a variety of means, including the developmental special duty selection process and professional military education.

Staff Sergeant. Skilled technicians with supervisory and training responsibilities. Typically, the 7-skill level is earned at this rank. Staff Sergeants ensure proper use of resources under their control for effective, efficient mission accomplishment. Abbreviation SSgt; address Staff Sergeant or Sergeant.

Technical Sergeant — apply this, do not only label it. Technical Sergeants are often a unit's technical experts. They continuously strive to develop as technicians, supervisors, leaders, and mentors through professional development opportunities, including PME. Technical Sergeants must complete the NCO Academy before assuming the grade of Master Sergeant. Abbreviation TSgt; address Technical Sergeant, Tech Sergeant, or Sergeant. Technical Sergeant is one of the two grades for which AFH 1 lists three authorized forms of address (Senior Master Sergeant is the other).

Apply it this way: TSgt remains in the NCO tier with SSgt. The TSgt overlay is unit technical expert plus the NCO Academy gate. Master Sergeant, not TSgt, transitions from first-line supervisor to leader of operational competence. NCO Academy is required to assume Master Sergeant, not to remain a Technical Sergeant.

SNCO tier

SNCOs are Master Sergeant, Senior Master Sergeant, and Chief Master Sergeant. They serve as leaders in the profession of arms and advise, supervise, mentor, and develop junior enlisted Airmen and NCOs. They continue professional development and participate in decision-making on technical, operational, and organizational issues. They leverage resources and personnel against a variety of mission requirements, and they may attend sister service or international SNCO courses.

Master Sergeant. Technical experts transitioning from first-line supervisors to leaders of operational competence, with increased responsibilities for leadership, management, and team building. They should consider broadening through the developmental special duty selection process. Master Sergeants must complete the SNCO Academy before assuming the grade of Senior Master Sergeant. Abbreviation MSgt; address Master Sergeant or Sergeant.

Senior Master Sergeant. Experienced, operational leaders, skilled at merging team talents, skills, and resources with other organizations. Abbreviation SMSgt; address Senior Master Sergeant, Senior, or Sergeant.

Chief Master Sergeant. Substantial operational and occupational experience; strategic leadership positions with tremendous influence; charged with mentoring and developing junior enlisted personnel and influencing the professional development of company grade officers. All newly selected RegAF chiefs will attend the Chief Leadership Course. Newly selected Reserve Component chiefs attend either the Chief Leadership Course or their Chief Orientation Course. Abbreviation CMSgt; address Chief Master Sergeant or Chief — not Sergeant.

Address traps: four junior enlisted grades may be addressed Airman; SSgt through SMSgt may be addressed Sergeant; only CMSgt is Chief; only TSgt and SMSgt have three listed forms.

Test Your Knowledge

Junior enlisted Airmen progress early in their career through which Airmanship Continuum sequence in AFH 1 Section 7B?

A
B
C
D
Test Your Knowledge

What written abbreviation and official terms of address does AFH 1 list for Technical Sergeant?

A
B
C
D
Test Your Knowledge

A Technical Sergeant is building a work-center training plan. Using AFH 1 Section 7B, which statement correctly applies the NCO-tier description and the TSgt-specific rule?

A
B
C
D