A uniform is a special set of clothes that some people wear to work in, and which some children wear at school. Uniforms are worn to show that a group of people belong together. There is no specific uniform for class 1 mentioned in the search results. However, some schools may require students to wear uniforms, which can vary in style and color depending on the school. Military and paramilitary uniform services have at least three uniform classifications: Class A, Class B, and Class C. Class A uniforms are more formal and include a dress jacket, dress pants, and custom insignia communicating the level of authority and experiences of the wearer. Class B uniforms are typically daily service or ‘everyday’ uniforms, most often a button-front uniform shirt and pant intended to be worn by members interacting with the public. Class C uniforms are “work” or specialty BDU (battle dress uniforms) uniforms for specific units, such as those that need to be stealthy and those which do more physically demanding tasks such as K9 patrol.