regimental sergeant major

/R EH0 JH AH0 M EH1 N T AH0 L S AA0 R JH AH0 N T M EY0 JH ER0/
noun
  1. 1

    The senior warrant officer in an regiment or battalion, usually a warrant officer class 1.

Source: https://en.wiktionary.org/wiki/regimental%20sergeant%20major