Austro-Hungarian Empire
Austro-Hungarian Empire is an Age of Empires III technology available to House of Habsburg from the Industrial Age, researched at Trading Post; Tambo (Inca only). It The "Radetzky March" ability now also spawns Hungarian Grenadiers.

Research profile
- Civilization
- House of Habsburg
- Research location
- Trading Post; Tambo (Inca only)
- Research time
- 30 seconds
- Food cost
- 375
- Coin cost
- 375
- Effect
- The "Radetzky March" ability now also spawns Hungarian Grenadiers
Effect & research conditions
Available to House of Habsburg from the Industrial Age. Research it at Trading Post or Tambo (Inca only). Effect: The "Radetzky March" ability now also spawns Hungarian Grenadiers. Research costs 375 food, 375 coin. Research takes 30 seconds.
Research condition
Available to House of Habsburg from the Industrial Age. Research it at Trading Post or Tambo (Inca only).
When to research
Research before activating Radetzky March if the added Hungarian Grenadiers will matter in the next fight. The 375 Food and 375 Coin, plus 30 seconds, buy an effect attached to that ability rather than a permanent army bonus. Have population space and a safe destination ready so the reinforcement does not arrive into an exposed position.
Hungarian Grenadiers for the House of Habsburg
Austro-Hungarian Empire is an Industrial Age technology for the House of Habsburg at a Trading Post or, for the Inca, a Tambo. It costs 375 Food and 375 Coin and takes 30 seconds. It adds Hungarian Grenadiers to the Radetzky March ability.
Time the ability with the army
The upgrade changes the ability’s reinforcement rather than granting an immediate unit shipment. Research when the House of Habsburg option is available and the army can use the added Grenadiers. The modest cost still competes with units, so confirm the ability is part of the plan.