Low ammo markers. They will pull double duty, in RF&F.
Here I have change from squares to circles. These circle dudes I picked up at AdeptiCon. Way easier to mass produce, no green stuff, and cost about 5 cents less. Yep a whole 5 cents, for a total Sudan project savings of a whopping 85 cents.
Dead dudes are HAT, Waterloo, Newline Design. Damaged guns are Old Glory