General Staff Roles Within ICS
Operations Section
The only section that directly supervises tactical resources. It is organized by divisions (geographic), groups (functional), branches, and task forces or strike teams. The Operations Section Chief translates incident objectives into tactics.
Planning Section
Situation status, resource status, documentation, demobilization, and technical specialists all sit here. Planning produces the IAP: ICS 202 objectives, ICS 203 organization, ICS 204 assignments, ICS 205 communications, and ICS 206 medical plan. Planning runs the Planning 'P' cycle across each operational period.
Logistics Section
Logistics splits into a Service Branch (communications, medical, food) and a Support Branch (supplies, facilities, ground support). It establishes incident facilities: ICP, base, camps, staging areas, helibase.
Finance/Administration
Time, Procurement, Compensation/Claims, and Cost units. Finance is activated when the incident requires cost tracking, documentation for reimbursement, or compensation claims - typical on large or federally declared events.
Worked example
Day three of a Type 3 wildfire: Operations runs Divisions A, B, and C plus a structure group. Planning tracks the perimeter and builds the next operational period's IAP; Logistics opens a base camp with feeding and a helibase; Finance activates because a cost-share agreement requires reimbursement documentation. Note the logic of activation: Operations to do the work, Planning to plan, Logistics to sustain, Finance when money must be accounted for.
Traps
The Communications Unit belongs to Logistics' Service Branch, not Operations. The Situation Unit produces the situation status that feeds the IAP; it is not just a field-observer pool. Resources Unit tracks status, but actual check-in is recorded on the ICS 211 by check-in recorders - do not confuse tracking with check-in.