For example, humans are easy they are just capsules. But for cavalry, an arrow could hit the horse or the rider. Right now cavalry are also capsule colliders for unit-unit collision, but for projectiles I would need to detect hits on the rider too.
Would a compound collides be the solution? In the Total War series, it looks like arrows have full mesh collision with units. Here is a video showing arrows hitting different parts of the models accurately-- It shows how arrows can hit limbs and the head idk how that is done in such a scale.)
How is this done?