ΔE 14.1, fair: the same colour family, but not a straight swap. Green Brown is a little lighter, much more saturated, warmer than Death Korps Drab.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Green Brown is a little lighter, much more saturated, warmer than Death Korps Drab.
The same difference applies the other way round: Death Korps Drab is a little darker, much more muted, cooler.
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 Death Korps Drab on the colour wheel See Green Brown on the colour wheel
All matches: Death Korps Drab equivalents · Green Brown equivalents