ΔE 17.6, loose: different enough that you should pick on purpose. Jade Green is noticeably lighter, cooler than German Camo Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Jade Green is noticeably lighter, cooler than German Camo Green.
The same difference applies the other way round: German Camo Green is noticeably darker, 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 German Camo Green on the colour wheel See Jade Green on the colour wheel
All matches: German Camo Green equivalents · Jade Green equivalents