During the Horus Heresy, how many loyal legion had hertics?
IT's some what well known that each of the nine hertic legions had small groups of loyalists like Loken from the Sons of horus.
my question is, do we know how many, if any, marines from the loyal legions joined the heretics during the Heresy? (leaving out the obvious questions around the Dark angels)
note: if you see me giving tactical advice: just assume i have a internet tab open to 1d4 chan and I'm summarizing off of that.
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