The new uniform guidance makes the Class B version almost identical to the Tropical Dress variation, which is primarily intended for soldiers in hot climates the tropical variation serves as the alternative for the Class A uniform, which requires the AGSU jacket, Master Sgt. 1, 2027, to acquire the new uniform, but the Army and Air Force Exchange Service has started offering the AGSU for purchase. Senior leaders approved the new AGSU for everyday wear in late 2018 as a replacement for the blue Army Service Uniform, or ASU, after deciding that uniform is often too formal for everyday business use.
