The president is known as the commander-in-chief. What does this mean?

The title "commander-in-chief" refers to the President's role as the highest-ranking officer in the military forces of a nation. In the United States, the President is designated as the commander-in-chief in the U.S. Constitution. This grants the President ultimate authority and responsibility over the nation's armed forces. As the commander-in-chief, the President has the power to make strategic military decisions, deploy troops, and determine military policies. While the President does not personally lead military operations on the ground, they exercise command and control over the military branches through their role as commander-in-chief.