Uniformed services in the context of "United States Public Health Service Commissioned Corps"

The United States has eight federal uniformed services that commission officers as defined by Title 10 and subsequently structured and organized by Titles 10, 14, 32, 33, and 42 of the U.S. Code.

An officer is a person who holds a position of authority as a member of an armed force or uniformed service.

Broadly speaking, "officer" means a commissioned officer, a non-commissioned officer (NCO), or a warrant officer. However, absent contextual qualification, the term typically refers only to a force's commissioned officers, the more senior members who derive their authority from a commission from the head of state.

The Pakistan Armed Forces (Urdu: پاکستان مسلح افواج; pronounced [ˈpɑːkˌɪstaːn mʊˈsəlˌle(ɦ) əfˈwɑːd͡ʒ]) are the military forces of Pakistan. It is the world's seventh-largest military measured by active military personnel and consists of three uniformed services—the Army, Navy, and the Air Force, which are backed by several paramilitary forces such as the National Guard and the Civil Armed Forces. As of the 2025 reforms, the highest-ranking military officer is the Chief of Defence Forces (CDF), who also serves concurrently as Chief of Army Staff (COAS), holding principal command authority over all three branches and overseeing war strategy, operations, joint force development, and resource allocation. The office of Chairman Joint Chiefs of Staff Committee (CJCSC) has been abolished, and many prior responsibilities are now assumed by the CDF, streamlining military command and accelerating decision-making.

A pivotal part of the 2025 reforms is the formation of the position of Commander of National Strategic Command (CNSC), a four-star army general appointed by the Prime Minister upon the CDF’s recommendation and is responsible for Pakistan’s nuclear and strategic assets. The Strategic Plans Division remains crucial, managing nuclear policy of Pakistan and national deterrent under the CNSC’s supervision. The President of Pakistan is the commander-in-chief of the Pakistan Armed Forces. All branches of Pakistan Armed Forces are now coordinated through the Chief of Defence Forces (CDF), who directs strategic planning, resource allocation, and joint military operations, with the Joint Staff Headquarters (JSHQ) being reorganised to support integrated command across all services from the Joint Staff Headquarters (JSHQ).

A prison officer (PO) or corrections officer (CO), also known as a correctional law enforcement officer or less formally as a prison guard, is a uniformed law enforcement official responsible for the custody, supervision, safety, and regulation of prisoners.

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.

Full dress uniform, also known as a ceremonial dress uniform or parade dress uniform, is among the most formal type of uniform used by military, police, fire and other public uniformed services for official parades, ceremonies, and receptions, including private ones such as marriages and funerals. Full dress uniforms typically include full-size orders and medals insignia. Styles tend to originate from 19th-century uniforms, although the 20th century saw the adoption of mess dress-styled full-dress uniforms. Designs may depend on regiment or service branch (e.g. army, navy, air force, marines). In Western dress codes, full dress uniform is a permitted supplementary alternative equivalent to the civilian white tie for evening wear or morning dress for day wear – sometimes collectively called full dress – although military uniforms are the same for day and evening wear. As such, full dress uniform is the most formal uniform, followed by the mess dress uniform.

Although full dress uniforms are often brightly coloured and ornamented with gold epaulettes, braids, lanyards, lampasses, etc., many originated in the 18th and early 19th centuries as normal styles of military dress that, with the adoption of more practical uniforms, were eventually relegated to ceremonial functions. Before World War I, most armed forces of the world retained uniforms of this type that were usually more colourful and elaborate than the ordinary duty (known as undress), or the active service dress uniform.