which formations do you use ?

[Musashi]

It basically just depends on whether my infantry is phalanx based or not.

If it's phalanx based I deploy the phalanxes out front, with javelins behind them and archers behind the javelineers, and what little cavalry I usually bring covering the flanks and serving as attack "wings" for flanking maneuvers.

If it's not phalanx based then I put the javelins out front, with the infantry behind them, and the archers behind the infantry with enough space for the javelins to occupy when they skirmish back through the lines. I set the javelins to skirmish, the infantry to guard, and the archers to hold position. That way the javelins retreating often lures the enemy into becoming entangled with my infantry where I can easily encircle them and cut them all down.

My typical tactics are to defend the archers at all costs, and wait for the right moment to begin an encircling tactic. I'm very conservative and methodical. I intend to bring as many of my men home at the end of the day as possible. No victory is glorious when you have to tell the mothers of your country that their sons won't be coming home to them.