I created an macedonian army, using an phalanx model I found in
Wikipedia. Following that, I arrived to the conclusion that I needed:
5 phalangites (katoikoi on this case)
5 long range skirmishers (used slingers)
2 fast moving skirmishers (thracians)
2 light cavalry (tarentine)
2 heavy cavalry (one being general's, the other was a lonchophoroi)
4 light infantry (in this case, thureophoroi)
With that army, arranged in a formation pretty similar to the one you can see on the image, I fought an stack and a half of athenian hopilites, some light infantry, a bunch of archers and an general. And, oh boy, I've lost and badly.
I've grouped my phalangites in a line, relatively close of each other, in groups of 6 ranks to make sure that every single sarissa would be used in the battle against the many armored oponents. My slingers would soft them before retreating behind the spear wall. The slinger part worked pretty well, but when the hopilites arrived, well... even being stopped by the pikes, in a loose formation, soldiers from the same unit were able to attack my phalangites from the flanks. I didn't even moved them, but, apparently, a straight line wasn't the smartest choice. Tried to help them with the thureophoroi, but everything was lost to that point.
So, was a strategical (unit selection and army composition) or a tactical (positioning in the battle field)? Because the computer WON that battle latter with a Clear Victory.