The United States Air Force Enlisted Service Dress Uniform, including the Service Dress Coat, nametag, and US lapel insignia, is also known as the Class A Uniform. Take away the Service Dress Coat and it is classified as the Class B Uniform, also referred to as the Service Blue Uniform. And if the Service Dress Uniform is worn without a nametag, it becomes the Semi-Formal Dress Uniform.
Basic components of the Men's Enlisted Service Dress Uniform include:
♦ Men's Service Dress Coat
♦ Men’s Blue Shirt
♦ Trousers (no cuffs and straight-legged)
♦ Blue belt (cotton web or elastic)
♦ Blue tie (polyester or silk herringbone twill)
♦ Black Oxford-style shoes (Dress boots optional)
♦ Service Cap or Flight Cap
♦ Nametag and US lapel insignia
♦ Chaplain, Aeronautical, Space, Cyberspace, and Missile Operation badges are mandatory
Enlisted Service Dress Uniforms feature the same basic construction as the uniforms worn by Air Force Officers. But Officers’ uniforms are differentiated from those worn by Enlisted personnel by the the addition of epaulets on the shoulders of the Service Dress Coat; they also have sleeve stripes made of blue braid—1.5-inches wide for Generals, a half-inch wide for all other Officers—three inches from the ends of both coat sleeves.