ΔE 14.6, fair: the same colour family, but not a straight swap. Battle Dress Green is noticeably darker than Light Soviet Khaki.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Battle Dress Green is noticeably darker than Light Soviet Khaki.
The same difference applies the other way round: Light Soviet Khaki is noticeably lighter.
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 Light Soviet Khaki on the colour wheel See Battle Dress Green on the colour wheel
All matches: Light Soviet Khaki equivalents · Battle Dress Green equivalents