Answer:
The correct wear of the cummerbund (also called cumberbund) would depend on whose traditions you follow. The military services have specified directives on how to wear their uniforms and they do not agree. While not the oldest service, the Army and its regulation governing the wear of uniforms (AR 670-1) specifically states the cummerbund is "worn with the pleats facing down." However, the Marine Corps, which is the oldest service, order governing the wear of the uniforms (MCO P1020.34) specifically states, "Cummerbunds will be worn with the pleats opening towards the top." The Navy Regulation (NAVPERS 15665) states, "Wear with pleats up, around the waist overlapping the skirt/trouser top at least 1 inch." Likewise, The Air Force regulation on uniform wear (AFI36-2903) states, "Wear cummerbund with pleats up around waist, half way between pants and shirt."