Macedonian cavalry vs infantry

[JaM]

Main problem with any cavalry unit facing infantry is that when you hit the infantry with the first line, your movement will slow down or even stop, which will present an obstacle for second rank of cavalry, and that second rank will be obstacle for the third one... so you practically end up with entire cavalry unit mixed together, with all men confused and disorganized.. and disorganized unit can be easily routed... so such attack against formed infantry is nothing but a good way how to lose your offensive strength... plus, with three lines, second line will be still able to use their pila against the mass of stationary cavalry in front of them which would have devastating effect...