ΔE 6.7, close: similar, with a visible difference side by side. Militia Green is more saturated than German Grey.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Militia Green is more saturated than German Grey.
The same difference applies the other way round: German Grey is more muted.
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 German Grey on the colour wheel See Militia Green on the colour wheel
All matches: German Grey equivalents · Militia Green equivalents