Heroes of Mana/Chapter 6: Falcon of the Burning Sands

Initially, there won't be a great deal of enemies concentrated in any particular place on the map. There are small groups scattered around the border, including one special unit in a small group of soldiers on the far side of the map. You may want to explore the edges of the map first, taking out the soldiers you find along the way. Once you've built up a good group of units and have eliminated most of the enemy units on the map, make your way to the center of the map and find the defectors.

Once you find the Neverlan defectors the mission changes.

At this point you may want to move your ship near the defectors and concentrate your troops here to defend them from the coming onslaught of enemy units. It's not too bad if you've built up your units with a good mix (heavy and missile units can come in handy), although if you find the defectors before you're prepared for the battle it is easy enough to lose this mission.