Problems with EB phalanx formation

[konny]

The AI doesn't seem to be as clever when it comes to flanking the phalanxes. I usually do fine with them in cities, although taking the gate is risky.

Yes, for the gate a heavy non-phalanx unit is better (if available), because for the attack it is better to give the Phalanx a movement destination behind the enemy formation than order them to attack the enemy. In gates they often end up as swordfighter used in this way. My favourites for this job are Samnite Miltes, Germanic or Greek bodyguards and naked fanatics. On the other hand, most of the Phalanxis aren't the worst units with the sword.