ΔE 7.4, close: similar, with a visible difference side by side. Cam. Black Green is a little lighter, more muted than WWI French Green 2.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Cam. Black Green is a little lighter, more muted than WWI French Green 2.
The same difference applies the other way round: WWI French Green 2 is a little darker, 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 WWI French Green 2 on the colour wheel See Cam. Black Green on the colour wheel
All matches: WWI French Green 2 equivalents · Cam. Black Green equivalents