ΔE 11.2, fair: the same colour family, but not a straight swap. Krieg Khaki is a little darker, more muted, cooler than New Iraqi Army Sand.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Krieg Khaki is a little darker, more muted, cooler than New Iraqi Army Sand.
The same difference applies the other way round: New Iraqi Army Sand is a little lighter, more saturated, 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 New Iraqi Army Sand on the colour wheel See Krieg Khaki on the colour wheel
All matches: New Iraqi Army Sand equivalents · Krieg Khaki equivalents