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S-339, Division/Group Supervisor (ILT)

Course Title
Division/Group Supervisor (ILT)
Training Required For
DIVS 310-1 Training Path 01
Version Date

2015

Previous Certification Dates

2006-09
1997-03

Course Number
S-339
Course Description

This course prepares students to perform in the role of Division/Group Supervisor (DIVS). It provides instruction in support of the specific tasks of the Division/Group Supervisor, but will not instruct students in general management/supervision or in the Incident Command System (ICS), both of which the student should learn through prerequisite work. Topics include division or group management, organizational interaction, division operations, all-hazard operations, and tactical decision games (optional). The pre-course work consists of a professional reading assignment that can take from four to eight hours to complete. There is a final examination in this course.

Course Objective

At the successful completion of this course, the student will demonstrate an understanding of the duties required of a Division/Group Supervisor in preparation for completing position task book elements.

Prerequisite Qualifications Notes

ICT4 Incident Commander Type 4

Lead Instructor Minimum Qualifications
The lead instructor must be a qualified Operations Section Chief Type 2 (OSC2).
Format
Instructor Led
Special Delivery Considerations

These materials are needed above and beyond the usual items (pens, paper, flip charts, markers, etc.).
Sample Agenda
Map 1 and Map 2 for TDGS exercises will need to be printed on a plotter at a minimum size of 24" x 36".
Sand tables for TDGS exercises.

Course Updates
2015 Version
Optional materials have been developed to enhance the students understanding of the Wildland Fire Decision Support System (WFDSS) relative to the Division Group Supervisor position. Instructors who choose to use the optional materials to enhance the course should be familiar with the lesson and its contents and determine how it will be used in the course.

The materials are available here: http://wfdss.usgs.gov/wfdss/WFDSS_NWCG_WFDSS.shtml.

Business Steward
OMC Operations Management Committee
Unit Instructor Minimum Qualifications
Unit instructors must be qualified as Division/Group Supervisor (DIVS) or Incident Commander Type 3 (ICT3).
Alternate Delivery Mode
Not Applicable
Class Size Recommendations

The recommended class size is 25 to 30 students. The recommended student-to-instructor ratio is 5:1. Cadre members should be present for all instructional sessions. A minimum of three instructors should present this course; however, more instructors are required if a field exercise is incorporated. This is to enable strong mentorship by the cadre to the students.

Class Size Recommendations

The recommended class size is 25 to 30 students. The recommended student-to-instructor ratio is 5:1. Cadre members should be present for all instructional sessions. A minimum of three instructors should present this course; however, more instructors are required if a field exercise is incorporated. This is to enable strong mentorship by the cadre to the students.

NWCG Latest Announcements

RMC Safety Bulletin 26-001: Rhabdomyolysis in Wildland Firefighters

Date:  May 28, 2026
Questions? 
Please contact: Risk Management Committee

The Risk Management Committee (RMC) has issued Safety Bulletin 26-001: Rhabdomyolysis in Wildland Firefighters. Research from 2016 to 2025 shows that 88 cases of rhabdomyolysis (rhabdo) were reported. Analysis of reports from eSafety, the Safety Management Information System (SMIS), and the Wildland Fire Lessons Learned Center (LLC) indicates that rhabdo is common during this time of year due to Work Capacity Tests and contributing factors such as weather, hydration, nutrition, and medication or supplement use.

RMC issued this safety bulletin to raise awareness in the Wildland Fire Community, and to provide research findings and educational resources that support reducing future cases of rhabdo.

References:

NWCG Alerts

RMC Safety Bulletin 26-001: Rhabdomyolysis in Wildland Firefighters

NEW! D-110, Expanded Dispatch Recorder Course Available Now

Date:  May 15, 2026
Questions? 
Please contact: Dispatch Position and Curriculum Management Subcommittee

NWCG is pleased to announce the new D-110, Expanded Dispatch Recorder (Instructor-led) course is now available on the Wildland Fire Learning Portal (WFLP). Developed through the National Coordination System Committee, this course introduces the structure and function of expanded dispatch, the qualities of an effective dispatcher, and provides hands-on experience with the Interagency Resource Ordering Capability (IROC) system. 

The D-110, Expanded Dispatch Recorder course aligns with the competencies and duties outlined in the NWCG Incident Position Standards for Expanded Dispatch Recorder, PMS 350-59, and is designed for individuals with no prior experience who may be called upon to support dispatch operations.

References:

D-110, Expanded Dispatch Recorder (Instructor-Led)

Expanded Dispatch Recorder (EDRC), Position Page

NWCG Incident Position Standards for Expanded Dispatch Recorder, PMS 350-59

Wildland Fire Learning Portal

Leadership Committee IAP Flyer Now Available

Date:  May 8, 2026
Questions? 
Please contact: Leadership Committee

The NWCG Leadership Committee promotes and enables leadership development across the wildland fire service. The committee provides education, training opportunities, and support for leadership innovation and best practices throughout the community.

A new IAP flyer is now available on the committee website, offering an overview of the products, curriculum, and learning opportunities the Leadership Committee develops. This resource is ideal for posting in your office, sharing with new employees, or distributing through your incident management teams to engage new voices in the leadership journey and reinforce a culture of self‑reflection, development, and growth.

References:

Leadership Committee 2026 IAP Flyer

Incident Operations Subcommittee Updates the Next Generation Position Task Book for FFT1

Date:  May 7, 2026
Questions? 
Please contact: Incident Operations Subcommittee

The NWCG Incident Operations Subcommittee (IOSC) has updated the NWCG Position Task Book for Firefighter Type 1 (Squad Boss) (FFT1), PMS 311‑14. The FFT1 Position Task Book transitioned to the Next Generation (Next Gen PTB) format in June 2025 through the Incident Performance and Training Modernization effort. Since then, IOSC has received feedback from the wildland fire community regarding coding for one of the tasks. Task #13 has been updated to include the option of evaluation in a simulation.

See IOSC Memorandum 26‑01: Transition Plan for Implementation of Updates to the NWCG Position Task Book for Firefighter Type 1 (Squad Boss) (FFT1), PMS 311‑14 for more information.

References:

IOSC Memorandum 26-01: Transition Plan for Implementation of Updates to the NWCG Position Task Book for Firefighter Type 1

NWCG Firefighter Type 1 Squad Boss Position Page