IPA: /mɪˈlɪʃə/
KK: /mɪˈlɪʃə/
A group of ordinary people who are trained to fight and can be called to serve in emergencies, but are not part of the regular army.
The local militia was called to help during the natural disaster.
Militia is derived from the Latin word "militia" (meaning military service or warfare), which comes from "miles" (meaning soldier). The term originally referred to a military force composed of ordinary citizens rather than professional soldiers.
Think of the Latin word for soldier, 'miles', to remember that 'militia' refers to a military force made up of regular citizens.