TECHNOLOGY · CIVILIZATION-SPECIFIC
Shield Wall
Infantry gain additional armor when grouped.

Overview
Infantry gain additional armor when grouped.
Effect and affected units
Shield Wall changes infantry gain +1/+1 armor for every 15 nearby infantry (max +3/+3). The affected target is every 15 nearby infantry (max +3/+3); the bonus does not automatically apply to the rest of the roster. 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 Castle. The recorded cost is 525 Food, 475 Gold, and the research time is 45 seconds. Consider whether the upgrade will affect enough units or workers to repay that investment before the match is decided.
Effect and research timing
Infantry gain additional armor when grouped. Effect: Infantry gain +1/+1 armor for every 15 nearby infantry (max +3/+3). Research becomes available in: Imperial Age; Research at: Castle; Research cost: 525 Food, 475 Gold; Research time: 45 seconds. This research is restricted to its named civilization, so it is part of that faction’s identity rather than a shared option. 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
- Castle
- Research time
- 45 seconds
- Effect
- Infantry gain +1/+1 armor for every 15 nearby infantry (max +3/+3)
Research requirements and effects for this entry.
- Focus
- Unique technology · Saxons
- Signature / category
- Unique technology · Saxons
- Release / context
- Civilization research
- Region
- Civilization-specific
- Classification
- Unique technologies