In Front of Bethla Garrison's Sluice

Enemies:  2 archers, 2 wizards, 4 knights    Guests:  None

Conditions for winning:  Open the Flood Gate!

The only battle that you don't even need to kill anyone, but I do reccomend you kill everyone. Since you'll have to wait till the two knights on the switches crystalise, might as well get all the loot from the rest of the fallen enemies. Once you've got everything, have Ramza open a switch one by one by having him move on them. Get everyone on the top and enjoy the effects when the gate blows up.  After this battle, Orlandu joins your team, have him learn Night Sword so he'll be fully able to take care of himself.