Help needed regarding tactics

[fabuloso]

if all else fail try recruiting some mercenaries there must be some thracian and bartarnae units available on the greek peninsula-they're fast enough and can engage the roman cavalry effectively at your flanks

[R'as al Ghul]

When playing the Greecs, your main force against Cavalry are your phalanxes.
Against the threat of being flanked, you obviously have to position your phalanxes on the flanks.
What I do is to position them in a long line. Now I rotate the outer units at 45 degrees. This gives the second unit, the one that faces the enemy directly, a good flank protection.
If you face massive Cav, rotate two units at the end and deploy some Greek CAv behind them.
It is very important to micromanage this flank when attacked. To receive the charge I put them in deep formation, very close to the neighbouring unit and turn guard mode off. Once engaged by enemy CAV, flank them with your Greek Cav or a Hoplite unit which is not in phalanx mode. It's sometimes helpful to not have them in phalanx.
It's also important to weaken CAv units before they reach you. Bring some archers and concentrate your fire on the charging Cav while they're out of melee range. Once engaged make your archers shoot at his other units to prevent friendly fire.
Basically you just need to stay put when you want to defend CAv with phalanxes. They always need some time to settle into perfect formation, so think before you move them.

R'as

[Salfin]

One thing I've noticed that is very difficult with Phalanxes is after you've engaged your enemy it's very easy for your line to dissolve very quickly, as different Phalanx units turn and move out of their line as the enemy units run about, change positions and flee.

I've found a number of times, especialy when fighting the Romans as the Greeks, that after I meet them with my Phalanxes, or just before their Cohorts will run all around, making it difficult to create a solid line. It's very useful in times like these to make good use of the Phalanx formation button so you can move your troops around quickly and rediploy them. Don't be afraid to take them out of formation, just do it carefully. Also make good use of peltasts, and heavy petlasts. If and when your line breaks appart, and the battle turns into chaotic group fighting, they can move from battle to battle, both flanking and guarding flanks.

The most important thing is, if you can to keep unity, you will gain the day. :)