Who has the final authority over all military matters? the Senate the President the House of Representatives the U. S. armed forces

The President.

Explanation:

The United States Armed Forces, made up of the Army, Navy, Air Force, Coast Guard, Space Force and Marines, are the body in charge of providing national defense against external aggressions from other nations or from foreign insurgent or terrorist groups.

The President of the United States, according to Article II of the Constitution, exercises the role of commander-in-chief of the armed forces, which is why he is the one who has the final authority in all matters related to the military operations of the United States. Even so, this situation is subject to a system of checks and balances, such as the authorization that Congress must give when declaring war on another nation.

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