Commander in Chief

A Commander-in-Chief (abbreviated CinC or CINC) is the supreme commander of an entire military or other type of service organization. If the person occupying this position is within the military hierarchy they are the senior flag officer and by definition have the highest service rank possible.

On Earth, the President of the United States also served as the commander in chief, a role Abraham Lincoln fulfilled "during the four bloodiest years" of United States of America history.