myrmidon

/ˈməːmɪd(ə)n/

IPA: /M ER1 M IH0 D IH0 N/

noun
  1. 1

    A soldier or a subordinate civil officer who executes orders of a superior without protest or pity (sometimes applied to bailiffs, constables, etc).

Source: https://en.wiktionary.org/wiki/myrmidon