From Final Fantasy Wiki

The battle in the South Wall of Fort Besselat

"A natural fortress surrounded on three sides by sheer cliffs. Served as a first of defense during the Fifty Years' War."

—Description

Fort Besselat, also known as the Bethla Garrison, is a location in Final Fantasy Tactics. It is the stronghold of Duke Goltanna and the Order of the Southern Sky. A natural fortress surrounded on three sides by sheer cliffs, Besselat served as a first line of defense against Ordallia during the Fifty Years' War. During the later portion of the game it is besieged by the Order of the Northern Sky. During the battle, the Church of Glabados machinist Barich Fendsor unleashes mossfungus poison on the attacking army, as part of a Lucavi plot to destroy both the Orders. Fortunately, Ramza Beoulve opens the fortress's sluice gate, flooding the nearby plains, and bringing the battle to a halt.

Battle Information

North Wall

Battle Information
Battle No. 41
Condition(s)	Defeat all enemies
Number of teams	1
Team capacity	4 + Ramza
Guest(s)	None
Battle formation	Front X X X X X X X . X X X X X X X Back
Enemies	6 (2 Dragoons, 1 Monk, 2 Archers, 1 Summoner)
Enemy level	Average: 35
Recommended level	35 - 37
Items of interest	None
Additional info	Save a separate file before beginning this, as you will not be able to get out until finishing the next two battles

This battle will only occur if the player chooses to take a frontal assault.

South Wall

Battle Information
Battle No. 41
Condition(s)	Defeat all enemies
Number of teams	1
Team capacity	4 + Ramza
Guest(s)	None
Battle formation	Front X X X X X X X . X X X X X X X Back
Enemies	7 (3 Knights, 1 Thieves, 2 Archers, 1 Ninja)
Enemy level	3 - 5
Recommended level	4 - 6
Items of interest	34
Additional info	35 - 37

Sluice

Battle Information
Battle No. 42
Condition(s)	Open the sluice
Number of teams	2
Team capacity	Team 1: 2 + Ramza Team 2: 2
Guest(s)	None
Battle formation	Front Team 1: . X X X X X Team 2: . X . X X X X X X Back
Enemies	8 (4 Knights, 2 Black Mages, 2 Archers)
Enemy level	Average: 37
Recommended level	38 - 40
Items of interest	None
Additional info	Defeating all enemies is not required, simply knock off the Knights on the two switches to win