the officer who holds the supreme command; "in the U.S. the president is the commander in chief"

a powerful role and one must have the power that goes along with that role

Commander in Chief was a television drama that focused on the presidential administration and family of Mackenzie Allen (portrayed by Geena Davis), the first female President of the United States, who ascended to the role after the previous chief executive, Teddy Bridges (played by Will Lyman), died in office from a sudden ruptured cerebral aneurysm. The series began broadcasting on ABC on Tuesday, September 27, 2005, at 9 p.m. Eastern Time, although most countries outside North America began screening the series in mid-2006.

a military term