Swordsmith (STW building)
It doesnt produce units.
The Swordsmith produces weapons of a higher than normal quality, which enhance the attacking ability of all troops produced in the region
Once a large castle has been built in a region, a wise daimyo will enlist the services of an experienced swordsmith. Swordsmiths will enhance the attacking ability of all the troops produced in the region. The swordsmith has rediscovered the lost arts of blade making, and produces weapons of such quality that they will never be surpassed. This building can also be improved to famous and legendary status.