War Academy (Age of Empires III)

The War Academy is a very special Chinese building, in that it appears to be a Barracks, but it can train Infantry and Cavalry alike, costing the same as only 1 Barracks, or one Stable. The War Academy can train Banner Armies, which are Chinese armies consisting of normally 4-6 units of 2 different types. Banner armies are more expensive than a single unit, but they are normally quite cost efficient to make up for the fact that they cannot train a single type of unit. The only units that the Chinese can train alone and one at a time are the Flamethrower and the Hand Mortar. There are several Banner Armies, which can serve varying purposes.