Service branch in the context of "Full dress uniform"

The United States Air Force (USAF) is the air service branch of the United States Armed Forces. It is a part of the United States Department of Defense and is one of the six armed forces and one of the eight uniformed services of the United States. Tracing its origins to 1 August 1907, as a part of the United States Army Signal Corps, the USAF was established by transfer of personnel from the Army Air Forces with the enactment of the National Security Act of 1947. It is the second youngest branch of the United States Armed Forces and the fourth in order of precedence. The United States Air Force articulates its core missions as air supremacy, global integrated intelligence, surveillance and reconnaissance, rapid global mobility, global strike, and command and control.

The Department of the Air Force, which serves as the USAF's headquarters and executive department, is one of the three military departments of the Department of Defense. The Department of the Air Force is headed by the civilian secretary of the Air Force, who reports to the secretary of defense and is appointed by the president with Senate confirmation. The highest-ranking military officer in the Air Force is the chief of staff of the Air Force, who exercises supervision over Air Force units and serves as one of the Joint Chiefs of Staff. As directed by the secretary of defense and secretary of the Air Force, certain Air Force components are assigned to unified combatant commands. Combatant commanders are delegated operational authority of the forces assigned to them, while the secretary of the Air Force and the chief of staff of the Air Force retain administrative authority over their members.

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.

The Soviet Ground Forces (Russian: Советские сухопутные войска, romanized: Sovetskiye sukhoputnye voyska) was the land warfare service branch of the Soviet Armed Forces from 1946 to 1992. It was preceded by the Red Army.

After the Soviet Union ceased to exist in December 1991, the Ground Forces remained under the command of the Commonwealth of Independent States until it was formally abolished on 14 February 1992. The Soviet Ground Forces were principally succeeded by the Russian Ground Forces in Russian territory. Outside of Russia, many units and formations were taken over by the post-Soviet states; some were withdrawn to Russia, and some dissolved amid conflict, notably in the Caucasus.

As of 2025, the United States Department of Defense operated 11 unified combatant command, also referred to as a combatant command (CCMD). These are joint military commands composed of units from two or more service branches, and conduct continuing missions. Each CCMD is the highest echelon of military commands, in order to optimize command and control of all forces, regardless of branch of service, during peace or war. CCMDs are organized either on a geographical basis (known as an "area of responsibility", AOR) or on a functional basis, e.g., special operations, force projection, transport, and cybersecurity. Currently, seven CCMDs are geographical, and four are functional. CCMDs have specific badges denoting their affiliation.

The Unified Command Plan (UCP) establishes the missions, command responsibilities, and geographic areas of responsibility of the CCMDs. Each time the UCP is updated, the organizations are reviewed for efficiency, efficacy, and alignment with national policy.

A combat uniform, also called a field uniform, battledress, or military fatigues, is a casual uniform used by military, police, fire, and other public uniformed services for everyday fieldwork and duty, as opposed to dress uniforms for formal functions and parades. It generally consists of a jacket, trousers, and shirt or T-shirt, all cut to be looser and more comfortable than more formal uniforms. Combat uniform designs vary by regiment or service branch (e.g. army, navy, air force, marines, etc.). Uniform fabrics often come in camouflage, disruptive patterns, or otherwise olive drab, brown, or khaki monochrome, to approximate the background and make the soldier less conspicuous in the field. In Western dress codes, field uniforms are considered equivalent to civilian casual wear, less formal than service dress uniforms, which are generally for office or staff use, as well as mess dress uniforms and full dress uniforms.

Combat uniforms have existed to some degree in most organized militaries throughout history, with the intent of providing both protection and easy identification. The British Indian Army's Corps of Guides were the first to use drab combat uniforms starting in 1848, when they wore light-brown clothing called "khaki" by Indian troops. The Second Boer War and World War I ended the pre-modern practice of issuing brightly-colored combat uniforms in favor of green, brown, khaki, and grey uniforms that better suited the varied environments of modern warfare. The first proper military camouflage pattern was Italy's telo mimetico, originally designed for half-shelters in 1929. Germany's Wehrmacht began issuing camouflage uniforms to paratroopers during World War II, and by the end of the war, both the Allies and Axis made use of camouflage uniforms for select units, usually special forces. The Cold War and post–Cold War era saw the gradual shift from monochromatic olive and khaki combat uniforms to those using camouflage patterns.