"Great Generals" are the supreme warriors of civilization. They create the weapons and train the soldiers. They plan the strategies to protect a civilization from its enemies, creating bold offensives, strong fortifications and cunning traps. They are the first out of the trench or onto the enemy's ship. They lead the charge into battle, carrying the fate of the people on their broad shoulders.
The Great General can construct the special Citadel improvement which gives a big defensive bonus to any unit occupying it, damages enemy units moving adjacent, and puts all adjacent tiles into your territory. The Great General is consumed when it builds the Citadel. The Great General provides a 15% combat bonus to all player-owned land units within 2 tiles. The Great General is NOT consumed when he provides this bonus.