GUIDE · TECHNOLOGY STRATEGY
Crenellations Castle-network defense
Crenellations turns a well-positioned Castle into a stronger area-control anchor, extending its range and allowing garrisoned infantry to add defensive fire. Build overlapping coverage where you need to hold a route or protect a concentrated economy.

Overview
Crenellations turns a well-positioned Castle into a stronger area-control anchor, extending its range and allowing garrisoned infantry to add defensive fire. Build overlapping coverage where you need to hold a route or protect a concentrated economy.
Plan and execution
Place the Castle to cover a critical crossing, production area, or neighboring defensive position, then garrison infantry when an attack approaches. With Teuton upgrades, the extra range can contest some long-range threats and overlapping Castles can protect each other; use infantry garrisons to strengthen their fire while keeping a mobile force ready beyond the Castle’s reach. Pair the static defense with scouting and a response group so attackers cannot simply move to an unguarded side.
Risks and adaptation
Long-range siege can still outrange a Castle, and infantry garrison fire is limited. Do not spend on the technology when the opponent can comfortably attack elsewhere or when a few mobile units would protect the same route more cheaply. Repair and screen the Castle against siege instead of relying on range alone.
- Signature / category
- Plan and execution
- Release / context
- Age of Empires II system
- Region
- Technology strategy
- Classification
- Technology strategies