ΔE 15.8, loose: different enough that you should pick on purpose. Sons of Horus Green is more saturated, warmer than Aggressor Blue FS 35109.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Sons of Horus Green is more saturated, warmer than Aggressor Blue FS 35109.
The same difference applies the other way round: Aggressor Blue FS 35109 is more muted, cooler.
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 Aggressor Blue FS 35109 on the colour wheel See Sons of Horus Green on the colour wheel
All matches: Aggressor Blue FS 35109 equivalents · Sons of Horus Green equivalents