Yes, a good explanation! Perhaps you could point out, how it's handled, when a column is attacked to a side edge. As beginners, we didn't know how to treat this...
Sure, I will try to do something on that. It is actually pretty simple, remember in Triumph that units attacked on the flank do not turn unless they lose the combat. Then they turn if the can and fallback unless shattered. If they cannot turn (due to being in column for example) they are destroyed.