Who is in charge of US military?

United States Armed Forces Commander-in-Chief: President of the United States, Donald Trump Secretary of Defense: Mark Esper Chairman of the Joint Chiefs of Staff: Mark A. Milley, USA Military budget: $718 billion (2018) Employees: 700,000 civilian 2.8 million military (2008) Click to see full answer. Also question is, who is the head of US military?Winchester, Massachusetts, U.S. Mark Alexander Milley (born June 18, 1958) is a United States Army general and the 20th Chairman of the Joint Chiefs of Staff, the highest-ranking officer in the United States military.Also, who is the highest military authority in the United States? Dempsey is the highest-ranking military officer in the U.S. Armed Forces and the principal military adviser to the president, the secretary of defense and the National Security Council. Correspondingly, who is in charge of the military? The president is the Commander in Chief over the entire U.S. military. Under the president is the Secretary of the Department of Defense who is in charge of all the branches of the military except for the Coast Guard.How powerful is America’s military?Per Credit Suisse, the U.S. Armed Forces are the world’s most powerful military. As of 2019, the U.S. military receives US$693 billion in order to fund its mandatory and discretionary accounts. As of 2018, the U.S. military accounts for roughly 36 percent of the world’s defense expenditures.