Knighthood is a Technology in Age of Empires III that can be researched in the Capitol building for 1500 food.The upgrade increases the hit points and the attack of the Explorer by 100%.
This technology must be researched before Peerage becomes available.
| Capitol technologies | |
|---|---|
| Blockade · Spies · Knighthood · Peerage · Legendary Native Warriors · Immigrants · Large Scale Agriculture · Deforestation · Excessive Taxation · Cadets · Brigadier General | |
| State Capitol technologies | |
 | Oregon Trail · State Constitutions · Statehood |
 | Cadets · New Mexico Immigration |
 | Blockade · Spies · Brigadier General · Legendary Native Warriors · Iowa Farmlands · Pine Tree State · Mountain State Gold Rush |
| Other civilization's counterparts | |
| African | Large Scale Farming · Ebony Exports · Strangers' Quarters |
| Asian | Mechanized Rice Cultivation · Tropical Timber Trade · Collective Economy · Exalted Natives |
| Native American | Large Scale Gathering · Deforestation · Excessive Tribute · Legendary Native Warriors |