page_title: Service dress uniform
section_title: United States Army
hierarchical_section_title: Service dress uniform / Service dress uniform by country / United States / United States Army
caption_attribution_description: New Army Class “A” Service Uniform.
context_page_description: Service dress uniform is the informal type of uniform used by military, police, fire and other public uniformed services for everyday office, barracks and non-field duty purposes. It frequently consists of a jacket, trousers, white dress shirt, and neck tie, sometimes for ceremonial occasions along with orders and medals insignia. Design may depend on regiment or service branch, e.g. army, navy, air force, marines, etc. In Western dress codes, service dress uniform is a permitted supplementary alternative equivalent to the civilian suit - sometimes collectively called undress or "dress clothes". As such, service dress uniform is considered less formal than both full dress uniform and mess dress uniform, but more formal than casual wear combat uniform.
  Service dress uniforms were originally worn on active service in the field or at sea, but became relegated to office, barracks, and walking out dress as more practical field uniforms evolved. In some parts of some armed forces such as the British Army, service dress uniform may also be used for ceremonial occasions, gradually replacing in this role the full dress uniforms that had preceded them as field uniforms.
context_section_description: The United States Army authorizes a blue uniform known as Army Service Uniform, which serves as the service dress uniform for officers and warrant officers since 1956. It was also authorized for wear by enlisted men and women at their own expense when off duty. The Army blue uniform comprises a dark-blue coat, light-blue or dark-blue (general officers) trousers, a white turndown-collar shirt, black four-in-hand or double Windsor necktie, a black beret, and often a ceremonial belt. When worn with a black bow tie, the Army blue uniform constitutes a formal uniform and corresponds to a civilian tuxedo. When worn with a black four-in-hand or double Windsor necktie, the Army blue uniform is an informal uniform. The uniform's colours are based on the traditional colours used by most Continental/U.S. Army uniforms from 1774 until 1902, with the introduction of khaki and olive drab relegating dark blue tunics and light blue trousers for full dress use and off duty wear until 1917.
  From 1954 to 2006, Green Service Uniform were used as the primary service dress uniform in the U.S. Army. In 2006, it was decided that all U.S. Army personnel were to transition to the blue Army Service Uniform. The blue Army Service Uniforms were issued to initial entry training soldiers beginning in the fourth-quarter of fiscal year 2010. In November 2018, the U.S. Army announced the blue Army Service Uniform would be phased out in favour of new Army Greens as a service dress, which are scheduled to be phased out of between 2018 and 2020.
caption: Members of the United States Army modelling the Class A Army Service Uniform.
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