military volunteer military volunteer /ˈmɪləˌtɛri vɔːlənˈtɪr/

noun

1. (military) a person who freely enlists for service  ( military volunteer , voluntary , volunteer )
   (military) a person who freely enlists for service
     The selfless volunteer dedicated their time and effort to helping those in need.
   The selfless volunteer dedicated their time and effort to helping those in need.