com·mand·er 
/kəˈmændɚ/ noun
plural com·mand·ers /kəˈmændɚ/ noun [count] 1 : a person who is in charge of a group of people
▪ the platoon/battalion commander ▪ the city's police commander — often used as a title ▪ Commander John/Jane Smith 2 : an officer of high rank in the U.S. Navy, the U.S. Coast Guard, or the British Royal Navy
▪ the platoon/battalion commander ▪ the city's police commander — often used as a title ▪ Commander John/Jane Smith
