Age of Empires II: Definitive Edition · Mounted archer technology
Parthian Tactics
Parthian Tactics grants mounted archers and Arambai armor and additional attack against Spearmen.
How it works
Parthian Tactics is listed at the Archery Range. It costs 200 food and 250 gold and takes 65 seconds to research. The stated effect applies to mounted archers and Arambai: +1/+2 armor and +2 attack against Spearmen. The passage does not define the armor notation, enumerate eligible mounted archers, or state an Age or civilization restriction.
Read the supporting references
Check the edition and source version for patch-specific details. Guide methodology.