Commander-in-Chief

Commander-in-Chief (in NATO-lingo often C-in-C or CINC pronounced "sink") is the commander of all the military forces within a particular region or of all the military forces in a state.

While well-known Commanders-in-Chief often have been senior generals, many countries have the rule that the Head of State is Commander-in-Chief in times of peace.

According to the Constitution of the United States, the President of the United States is the Commander-in-Chief of all military forces of the United States. Subordinate to the President and the Secretary of Defense are the heads of the regional military commands who are Commanders-in-Chief of the military forces in their region.