Battle 1:
Mikhail (2000) vs the Goblin King (4000, Goblin Army)

Since Mikhail will have many more battles in the War Game to participate in, it is recommended to try your best in these battles so that you may get the feel for them.  I will also list the recommended tactics you should attempt to gain after each battle.  In this battle you may obtain the formation, Backwater, by moving back to the far right side of the battlefield then charging and killing your opponents.  Well now for the tactics- I perfer the straight formation in this battle due to the Goblin King's scattered formation.  Now charge until you meet the goblins head on then use All Defense.  Wait until the goblin's morale has plummeted (orange or red preferably) then use All Charge.  Once you've killed a fair amount off, Radom's calvary will come in and kill quite a few of the goblins.  He'll realize his errors and help you in your battles against Godwin.  Now continue your charge and watch the goblins die very quickly.  Note: If you want the rare formation Backwater, follow these steps:

1) Kill all the goblins except for the Goblin King

2) Use Move Back to get to the very edge of the screen

3) Kill the Goblin King

If everything worked out, then this is what you should see:

Then...

Congratulations, you just gained Backwater!

I recommend grabbing F Row Exchg if at all possible.  If you didn't get Backwater and choose to just go for a second tactic, try to get Speed Atk Fwd.  Another recommended combination, which seems really rare, is Gush Wind and Speed Atk Fwd.  This combination makes most of the other battles laughable later.