Why hold the battle at Carteneau Flats? Not the best place. The Empire would face opponents from three fronts. NE from Grid reinforcements, SE from Ul'dah reinforcements, and from the West with LL and since it's close to the coast, LL can shell the Imperials from their ships. Make that a fourth front to the North if Ishgard decided to get involved.

Should have just battled in Grid, it's close enough to the Empire's borders to provide quick reinforcements and they would only have to deal with the SW (Grid) front. Picking a fight right in the middle of the region was kind of dumb, they open themselves up for massive flanking.

Of course, they prolly picked this spot as it's where Dalamud fell. Some form of symbolism.

/war strategies off