ΔE 13.8, fair: the same colour family, but not a straight swap. Military Yellow is a little darker, cooler than Tallarn Sand.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Military Yellow is a little darker, cooler than Tallarn Sand.
The same difference applies the other way round: Tallarn Sand is a little lighter, 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 Tallarn Sand on the colour wheel See Military Yellow on the colour wheel
All matches: Tallarn Sand equivalents · Military Yellow equivalents