ΔE 10.9, fair: the same colour family, but not a straight swap. German Red Brown is a little lighter, cooler than Scabbard Brown.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). German Red Brown is a little lighter, cooler than Scabbard Brown.
The same difference applies the other way round: Scabbard Brown is a little 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 Scabbard Brown on the colour wheel See German Red Brown on the colour wheel
All matches: Scabbard Brown equivalents · German Red Brown equivalents