What do the terms "unity of command" refer to in ICS?

The term "unity of command" in the Incident Command System (ICS) refers to the principle that each individual involved in an incident response reports to one designated supervisor. This structure helps to ensure clear lines of authority and communication, which are essential for effective incident management. When each person knows who their direct supervisor is, it reduces confusion and increases accountability.

This principle prevents situations where a person might receive conflicting orders from multiple sources or supervisors, which can lead to chaos and inefficiency during an emergency response. By having a single point of command for each individual, the ICS promotes organized action and synergy among the various teams involved in managing an incident.