Army Service Uniform (ASU) – Occasion for Wear

The Army Service Uniform is worn (note that this entire paragraph is based on the interim announcement, and not a published change to AR 670-1):

• Year-round
• As an optional dress uniform (currently) when worn with the white shirt and black bow tie
• As a replacement for the Army Green Service Uniform in its Class A and B forms

While AR670-1 states that the black bow tie is worn only after retreat, in practice Soldiers wear the black bow tie during very formal afternoon events, such as weddings, especially when the event extends into the evening hours.