United States Secretary of the Navy in the context of "Flag of Washington, D.C."

The United States Department of the Navy (DON) is one of the three military departments within the United States Department of Defense. It was established by an Act of Congress on 30 April 1798, at the urging of Secretary of War James McHenry, to provide a government organizational structure to the United States Navy (USN). Since 1834, the department has exercised jurisdiction over the United States Marine Corps (USMC), and during wartime the United States Coast Guard (USCG). These branches remain at all times independent and coequal service branches within the DON. It is led by the secretary of the Navy (SECNAV), a statutory civilian officer.

The Department of the Navy was an executive department, whose secretary served on the president's cabinet, until 1949, when amendments to the National Security Act of 1947 established the Department of Defense as a unified department for all military services; the DON, along with the Department of the Army and Department of the Air Force, became a component of the DoD, subject to the authority, direction and control of the secretary of defense.

Assistant Secretary of the Navy (ASN) is the title given to certain civilian senior officials in the United States Department of the Navy.

From 1861 to 1954, the assistant secretary of the Navy was the second-highest civilian office in the Department of the Navy (reporting to the United States secretary of the Navy). That role has since been supplanted by the office of Under Secretary of the Navy and the office of Assistant Secretary of the Navy has been abolished. There have, however, been a number of offices bearing the phrase "Assistant Secretary of the Navy" in their title (see below for details).

The United States Naval Academy (USNA, Navy, or Annapolis) is a federal service academy in Annapolis, Maryland. It was established on 10 October 1845 during the tenure of George Bancroft as Secretary of the Navy. The Naval Academy is the second oldest of the five U.S. service academies and it educates midshipmen for service in the officer corps of the United States Navy and United States Marine Corps. It is part of the Naval University System. The 338-acre (137 ha) campus is located on the former grounds of Fort Severn at the confluence of the Severn River and Chesapeake Bay in Anne Arundel County, 33 miles (53 km) east of Washington, D.C., and 26 miles (42 km) southeast of Baltimore. The entire campus, known colloquially as the Yard, is a National Historic Landmark and home to many historic sites, buildings, and monuments. It replaced Philadelphia Naval Asylum in Philadelphia that had served as the first United States Naval Academy from 1838 to 1845, at which time the Naval Academy formed in Annapolis.

Candidates for admission generally must apply directly to the academy and apply separately for a nomination, usually from a member of Congress. Students are officers-in-training with the rank of midshipman. Tuition for midshipmen is fully funded by the Navy in exchange for an active duty service obligation upon graduation. Approximately 1,200 "plebes" (an abbreviation of the Ancient Roman word plebeian) enter the academy each summer for the rigorous Plebe Summer. About 1,000 midshipmen graduate and commission. Graduates are commissioned as either ensigns in the Navy or second lieutenants in the Marine Corps, but a small number can also be cross-commissioned as officers in other U.S. services, and the services of allied nations. The United States Naval Academy has some of the highest-paid graduates in the country according to starting salary. The academic program grants a Bachelor of Science degree with a curriculum that grades midshipmen's performance upon a broad academic program, military leadership performance, and mandatory participation in competitive athletics. Midshipmen are required to adhere to the academy's Honor Concept.

The Joint Chiefs of Staff (JCS) is the body of the most senior uniformed leaders within the United States Department of Defense, which advises the president of the United States, the secretary of defense, the Homeland Security Council and the National Security Council on military matters. The composition of the Joint Chiefs of Staff is defined by statute and consists of a chairman, a vice chairman, the chiefs of the Army, Marine Corps, Navy, Air Force, and Space Force, and the chief of the National Guard Bureau. Each of the individual service chiefs, outside their Joint Chiefs obligations, works directly under the secretaries of their respective military departments, e.g. the secretary of the Army, the secretary of the Navy, and the secretary of the Air Force.

Following the Goldwater–Nichols Act in 1986, the Joint Chiefs of Staff do not have operational command authority, either individually or collectively, as the chain of command goes from the president to the secretary of defense, and from the secretary to the regional combatant commanders. Goldwater–Nichols also created the office of vice chairman, and the chairman is now designated as the principal military adviser to the secretary of defense, the Homeland Security Council, the National Security Council and the president.

The secretary of war was a member of the U.S. Cabinet, beginning with George Washington's administration. A similar position, called either "Secretary at War" or "Secretary of War", had been appointed to serve the Congress of the Confederation under the Articles of Confederation between 1781 and 1789. Benjamin Lincoln and later Henry Knox held the position. When Washington was inaugurated as the first president under the Constitution, he appointed Knox to continue serving as secretary of war.

The secretary of war was the head of the War Department. At first, he was responsible for the United States Army and the Navy. In 1798, the secretary of the Navy was created by statute, and the scope of responsibility for the War Department was reduced to the Army. From 1886 onward, the secretary of war was in the line of succession to the presidency, after the vice president of the United States, the Speaker of the House of Representatives, the president pro tempore of the Senate and the secretary of state.

Civil control of the military is a doctrine in military and political science that places ultimate responsibility for a country's strategic decision-making in the hands of the state's civil authority, rather than completely with professional military leadership itself. As such, a "fundamental requirement of any nation is to ensure that the activities of its armed forces be subordinated to the political purposes of constitutional government; hence, the armed forces must be under civil control". The concept of civil control falls within the overarching concept of civil-military relations representing the "societal imperative that the military remain subordinate to civil authority and that it reflect, to an appropriate degree, societal values and norms".

Civil oversight over militaries puts the power to take military action in the hands of a civil authority, such as through government ministers or legislative bodies, or the democratic apparatus of the Crown in constitutional monarchies. Allowing the civil component of government to retain control over the military or state security illustrates the power of the citizenry, a healthy respect for democratic values, and what can be described as good governance. Giving power to the civil component of the government over what the military can do and how much money it can spend protects the democratic process from abuse. Nations that can achieve legitimate relationship between the two structures serve to be more effective and provide accountability between government and military.

The American Renaissance was a period of American architecture and the arts from 1876 to 1917, characterized by renewed national self-confidence and a feeling that the United States was the heir to Greek democracy, Roman law, and Renaissance humanism. Local conditions and requirements of America, including the aforementioned nationalism, spurred this change of style, allowing it to slowly develop over time in various places around the United States. The era spans the period between the Centennial Exposition (celebrating the 100th anniversary of the signing of the Declaration of Independence) and the United States' entry into World War I.

The general counsel of the Department of the Navy is the senior civilian lawyer in the U.S. Department of the Navy and is the senior legal adviser to the secretary of the navy. The Office of the General Counsel of the Navy provides legal advice to the secretary, the under secretary and the various assistant secretaries and their staffs. The general counsel is the third highest-ranking civilian office in the Department of the Navy, behind the Secretary and Under Secretary of the Navy.

The general counsel maintains a close working relationship with the judge advocate general, the senior uniformed lawyer in the Department of the Navy who performs statutory duties under the Uniform Code of Military Justice.