ΔE 14.8, fair: the same colour family, but not a straight swap. Battledress Brown is a little lighter, much more muted than Wyldwood.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Battledress Brown is a little lighter, much more muted than Wyldwood.
The same difference applies the other way round: Wyldwood is a little darker, much more saturated.
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 Wyldwood on the colour wheel See Battledress Brown on the colour wheel
All matches: Wyldwood equivalents · Battledress Brown equivalents