ΔE 10.5, fair: the same colour family, but not a straight swap. Cavalry Brown is a little lighter, cooler than Sharpnel Red.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Cavalry Brown is a little lighter, cooler than Sharpnel Red.
The same difference applies the other way round: Sharpnel Red is a little darker, warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Sharpnel Red on the colour wheel See Cavalry Brown on the colour wheel
All matches: Sharpnel Red equivalents · Cavalry Brown equivalents