TECHNOLOGY · UNIVERSITY
Arrowslits
Improves the attack of towers and selected defensive buildings.

Overview
Improves the attack of towers and selected defensive buildings.
Effect and affected units
Arrowslits changes watch Tower/Guard Tower/Keep/Donjon +1/+2/+3/+3 attack. Read the named target carefully: this effect applies only to the units, buildings, or economy described in its entry. This is the main reason to research it; compare the affected units with the army you expect to field.
Research cost and timing
Research is available in Imperial Age at the University. The recorded cost is not separately recorded, and the research time is 25 seconds. Consider whether the upgrade will affect enough units or workers to repay that investment before the match is decided.
Effect and research timing
Improves the attack of towers and selected defensive buildings. Effect: Watch Tower/Guard Tower/Keep/Donjon +1/+2/+3/+3 attack. Research becomes available in: Imperial Age; Research at: University; Research time: 25 seconds. Its value depends on which units receive the effect and how often they take part in combat; timing it before a major engagement can improve the whole eligible group.
Research details
- Age
- Imperial Age
- Research building
- University
- Research time
- 25 seconds
- Effect
- Watch Tower/Guard Tower/Keep/Donjon +1/+2/+3/+3 attack
Research requirements and effects for this entry.
- Also known as
- Arrowslits (Age of Empires II)
- Focus
- Research
- Signature / category
- University
- Release / context
- Core system
- Region
- University
- Classification
- Technologies