- Metal gather rate +10
- Knowledge gather rate +10
- Foot Archers, Ranged Cavalry (including armored cars), Towers, Forts and Cities gain +1 attack strength.
The gather rates from rare resources can be increased in various ways, as described in the main article. Also note, that Metal and Knowledge are not gathered before the Classical Age. Foot Archers lose this bonus, once they are upgraded to Musketeers. Ranged cavalry on the other hand keeps the attack bonus throughout the game, even when upgraded to armored vehicles such as Armored Cars etc. This is due to the fact, that these vehicles still belong to the Ranged Cavalry class.