It's basically the same, maintain a line, charge, go for the flanks and rear of enemy units if possible (you'll need to pin down the enemy unit first, or it will just turn to face you of course), listen to the advisor. You can use skirmishers to weaken a section of the enemy line, then punch through it with some heavy troops or cavalry, then divide and conquer. The key to winning is to disrupt the enemies' formation.