TECHNOLOGY · BLACKSMITH
Blast Furnace
The final shared melee attack upgrade for infantry and cavalry.

Overview
The final shared melee attack upgrade for infantry and cavalry.
Effect and affected units
Blast Furnace changes infantry, cavalry, and Hulk line +2 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 Blacksmith. The recorded cost is 275 Food, 225 Gold, and the research time is 100 seconds. The linked progression is Forging → Iron Casting → Blast Furnace. Consider whether the upgrade will affect enough units or workers to repay that investment before the match is decided.
Effect and research timing
The final shared melee attack upgrade for infantry and cavalry. Effect: Infantry, cavalry, and Hulk line +2 attack. Research becomes available in: Imperial Age; Research at: Blacksmith; Research cost: 275 Food, 225 Gold; Research time: 100 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
- Blacksmith
- Research time
- 100 seconds
Research requirements and effects for this entry.
- Focus
- Research
- Signature / category
- Blacksmith
- Release / context
- Core system
- Region
- Blacksmith
- Classification
- Technologies
research Line: Forging → Iron Casting → Blast Furnace