patrolman

Etymology

patrol + -man

noun

1. A police officer, especially a junior officer assigned patrol duty instead of detection or supervision.
   On September 9, when a solitary Japanese patrolman tried to curtail the work of five Taiwanese who were cutting trees from a windbreak (in Anting settlement, Sinhua district), the accused responded "Taiwan is not Japan's land. Why are you stopping us?" 2006, Ping-hui Liao, David Der-wei Wang, Taiwan Under Japanese Colonial Rule, 1895–1945, →LCCN, →OCLC, page https://books.google.com/books?id=pHlwcjwt7fEC&pg=PT391