deputy commanding officer, deputy commander

commanding officer; commander

an appointment, assignment, installation, induction, or instatement of a person to an office or position

to appoint, assign, install, induct, or instate a person to an office or position

command (of troops) / commander

to command (troops)

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

assistant / sub- / deputy / vice-