Pulling units out of combat, rotating units in and out of combat

[ReluctantSamurai]

I have noted for example that a cavalry charge against an infantry unit that is in disarray is more likely to break it than when it is in good formation.

This is something that I have noticed, as well. While I haven't done any concrete testing, my standard Seleucid line-buster consists of Scythed Chariots on the flanks and Ellie's in the center of my line. I echelon my heavy cav to hit the enemy lines after the initial strike.

Insta-rout.

I believe it's due more to unit disruption than to the morale factors of facing an elephant/chariot charge...but, without testing, it's only a theory.