Valiant Soldier Assault Decoration.

[Taz]

This is one of a series of so called NLF Hero Decorations awarded to NLF units and troops.
This particular one is a single class decoration awarded to NLF Units and soldiers who participated in assaults on enemy positions.
The inscription reads: DUNG-SI XUNG KICH (Valiant Soldier Assault)
This type of award is suspended on a bi-colour metal suspension with a star in the center.

[Taz]

"National Liberation Front of South Vietnam"
"Valiant Soldier Assault Decoration awarded to Scout Unit 207a"
"Rung Sat - Nha Be "
"1966"

[medals73]

Another example. Interesting how the blue on the suspension bar scans as green.