What is a militia that could be ready to fight quickly?

A militia that could be ready to fight quickly is often referred to as a "ready reserve" or "rapid response" militia. These groups are typically composed of local volunteers who are trained and organized for immediate mobilization in times of crisis or conflict. They may have pre-established communication systems and logistical plans to ensure swift deployment. Such militias often focus on community defense and may operate alongside or in support of official military or law enforcement agencies.