Battle 4:

Mikhail (4000) vs Baron Edwin (4000, Wave Shield)

The enemy is Baron Edwin, 4000.  Good at Front Row Charge.

I recommend the Gush Wind formation for this battle.  Baron Edwin's infantry is very slow and will easily be pushed back with Gush Wind and Spd Atk Fwd.  Since Edwin is using Wave Shield, he'll have 2 rows: one of infantry, and one of calvary/ninjas (what I call the long-haired very fast soldiers).  Whenever he exchanges rows, use All Defense to prevent unnecessary losses.  Then once the rows have been exchanged, use Move Back to recover some more morale then use All Defense until their morale has been adequately lowered and use All Charge.  You need to remove the faster units to win this battle.  An alternate strategy is to use Spd Atk Fwd to attempt to push the enemy as far back as possible an then use All Charge.  This is very risky though, because if they are not far enough back, most likely you will lose the battle.

If you plan on using the 2nd strategy, make sure they are farther back than this before attempting an All Charge...

This is probably one of the hardest battles in the War Game.