What are the differences between straight and "gull wing" chevrons? I only know of the USMC and CSMC using gull wing chevrons, but some say that gull wings were used in the army aswell.
The photos of the day leave a lot to be desired with relation to color. For many red could merge with blue and yellow could appear - or not. Here is an attempt to colorize a good photo, mainly sharp and detailed , of a USMC guard at Washington Navy Yard. This is the final version which needed a LOT of revision. Original first:
I am not sure what rank the NCO was but the size of the chevrons did not look big enough for a sergeant - that and the frog-mounted sheath for the NCO sword.