commander-in-chief
noun [ C ] military uk/kəˌmɑːn.dər.ɪnˈtʃiːf/ us/kəˌmæn.dɚ.ɪnˈtʃiːf/ commanders-in-chief (US abbreviation CINC); (UK abbreviation C-in-C)
（一国的）最高统帅，武装部队总司令;（特定地区或行动的）总司令，总指挥
a commander in charge of all the armed forces of a country or of all the forces fighting in a particular area or operation