ΔE 11.5, fair: the same colour family, but not a straight swap. Dark Soviet Khaki is more muted, cooler than Field Drab (FS30118).
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Dark Soviet Khaki is more muted, cooler than Field Drab (FS30118).
The same difference applies the other way round: Field Drab (FS30118) is more saturated, 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 Field Drab (FS30118) on the colour wheel See Dark Soviet Khaki on the colour wheel
All matches: Field Drab (FS30118) equivalents · Dark Soviet Khaki equivalents