ΔE 8.4, close: similar, with a visible difference side by side. Japan. Unif. WWII is cooler than Green-Brown.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Japan. Unif. WWII is cooler than Green-Brown.
The same difference applies the other way round: Green-Brown is 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 Green-Brown on the colour wheel See Japan. Unif. WWII on the colour wheel
All matches: Green-Brown equivalents · Japan. Unif. WWII equivalents