ΔE 15.0, loose: different enough that you should pick on purpose. Death Korps Drab is noticeably lighter, more saturated than German Field Grey.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Death Korps Drab is noticeably lighter, more saturated than German Field Grey.
The same difference applies the other way round: German Field Grey is noticeably darker, 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 Field Grey on the colour wheel See Death Korps Drab on the colour wheel
All matches: German Field Grey equivalents · Death Korps Drab equivalents