commandant (n.)

• aide
• aide-de-camp
• brigadier
• bull
• captain
• chatelaine
• colonel
• commander
• custodian
• director
• exec
• executive
• gaoler
• general
• generalissimo
• governor
• guard
• guardian
• jailer
• keeper
• lieutenant
• major
• manager
• marshal
• master
• officer
• ruler
• screw
• sirdar
• subaltern
• sublieutenant
• turnkey
• warden
• warder