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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

NEW! NWCG Standard Operating Procedures, PMS 900

Date:  July 9, 2026
Questions? 
Please contact: NWCG Staff

NWCG is excited to announce the publication of the NWCG Standard Operating Procedures, PMS 900.

The new publication establishes general, consistent, and uniform standards for conducting business with the National Wildfire Coordinating Group.

References:

NWCG Standard Operating Procedures, PMS 900

Quarter Four Materials for the 2025-2026 Wildland Fire Leadership Campaign Now Available

Date:  July 8, 2026
Questions? 
Please contact: Leadership Development Subcommittee

NWCG is excited to announce that Fourth Quarter materials for the 2025/2026 Wildland Fire Leadership Campaign are now available. This annual initiative offers all students of leadership and wildland fire management an opportunity to engage with essential leadership skills and knowledge needed to lead effectively in dynamic environments.

Quarter Four materials focus on Leadership Level 4: Leader of Leaders (Provide Direction). Leadership Level 4 is where you are setting the conditions for others to do things well, even when you are not present. This quarter focuses on equipping experienced leaders with skills to provide direction, build trust across teams, and foster strong decision making. 

References:

2025/2026 NWCG Leadership Campaign - Leadership Levels

Wildland Fire Leadership Development Program

Leadership Development Subcommittee

2026 Week of Remembrance

Date:  June 30, 2026
Questions? 
Please contact: 6 Minutes for Safety Subcommittee

As we approach the 2026 Week of Remembrance (WOR), June 30–July 6, we dedicate this time to reflect on past incidents from 2016 and honor the fallen through learning. Since its inception in 2014, WOR has honored wildland firefighters who made the ultimate sacrifice while encouraging critical discussions that reinforce lessons learned.

Throughout the week, we encourage thoughtful and generative conversations that promote a culture of continuous learning and safety.

References:

2026 Week of Remembrance: Letter to Leadership

Wildland Fire Lessons Learned Center

RMC Memorandum 26-02: SAFENET Modernization and SafeNetX Launch

Date:  June 25, 2026
Questions? 
Please contact: Risk Management Committee

The Risk Management Committee (RMC) is pleased to announce the launch of SafeNetX, the modernized safety reporting system now available to the wildland fire community. Effective June 15, 2026, SafeNetX enables reporting of unsafe, unhealthy, near-miss, and high-risk operations across wildland fire, all-hazard incidents, training, and related work environments.

SafeNetX is the result of a multi-agency modernization effort led by RMC, which began evaluating improvements to the legacy SAFENET system in 2021. To learn more, read the full RMC memorandum in the links provided.

References:

SafeNetX

RMC Safety Memorandum 26-02: SAFENET Modernization and SafeNet X Launch