<Tr> <Td> Seaman </Td> <Td> Private or gunner or trooper </Td> <Td> Aircraftman or airman </Td> </Tr> <Tr> <Td_colspan="3"> Talk View </Td> </Tr> <P> A commander - in - chief, also sometimes called supreme commander, or chief commander, is the person or body that exercises supreme operational command and control over a nation's military forces . As a technical term, it refers to military competencies that reside in a nation - state's executive leadership--a head of state or a head of government . </P> <P> Often, a given country's commander - in - chief (if held by an official) need not be or have been a commissioned officer or even a veteran . In these countries this follows the principle of civilian control of the military . </P>

Who has the final say over all military matters