ΔE 9.0, close: similar, with a visible difference side by side. Dark Battle Dress is more muted than Field Drab (FS30118).
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Dark Battle Dress is more muted than Field Drab (FS30118).
The same difference applies the other way round: Field Drab (FS30118) is 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 Field Drab (FS30118) on the colour wheel See Dark Battle Dress on the colour wheel
All matches: Field Drab (FS30118) equivalents · Dark Battle Dress equivalents