Final answer:
In the Incident Command System (ICS), an assembly of two to five single resources gathered for a specific task is referred to as a Task Force.
Step-by-step explanation:
The ICS term for an assembly of two to five single resources gathered to accomplish a specific task is a Task Force. The Incident Command System (ICS) utilizes this designation to manage a set of resources that are temporarily put together for a particular operational objective. A Task Force can include a mix of different resource types and would work under a single leader, which differentiates it from a Group, which is typically a collection of individual resources with similar functions working together on a common task, or a Strike Team, which is composed of a set of similar resources with a common communication set and leader.