Kalthoff Repeaters
Kalthoff Repeaters is an Age of Empires III technology from the Fortress Age, researched at Trading Post or Tambo on a House of Oldenburg palace. It Light infantry and counter skirmisher bonus damage against light infantry +0.1x, Royal Huntsman and Royal Hunter bonus damage +0.5x instead.

Research profile
- Age
- Fortress Age
- Research location
- Trading Post or Tambo on a House of Oldenburg palace
- Research time
- 30 seconds
- Wood cost
- 175
- Coin cost
- 175
- Effect
- Light infantry and counter skirmisher bonus damage against light infantry +0.1x, Royal Huntsman and Royal Hunter bonus damage +0.5x instead
Effect & research conditions
Available from the Fortress Age. Research it at Trading Post or Tambo on a House of Oldenburg palace. Effect: Light infantry and counter skirmisher bonus damage against light infantry +0.1x, Royal Huntsman and Royal Hunter bonus damage +0.5x instead. Research costs 175 wood, 175 coin. Research takes 30 seconds.
Research condition
Available from the Fortress Age. Research it at Trading Post or Tambo on a House of Oldenburg palace.
When to research
Research Kalthoff Repeaters when the named units or matchup are relevant: Light infantry and counter skirmisher bonus damage against light infantry +0.1x, Royal Huntsman and Royal Hunter bonus damage +0.5x instead. Finish it before the affected force enters combat, and retain resources for counters and reinforcements; this modifier does not remove the units’ other weaknesses. Use the Trading Post or Tambo on a House of Oldenburg palace for research. Research takes 30 seconds and costs 175 wood, 175 coin.
Light-infantry matchup
The Fortress Age technology costs 175 Wood and 175 Coin and takes 30 seconds at a Trading Post or Tambo on a House of Oldenburg palace. It adds 0.1x bonus damage against Light Infantry to Light Infantry and Counter Skirmisher units. Royal Huntsmen and Royal Hunters receive the larger 0.5x increase instead. The effect is specifically aimed at the skirmisher-style matchup; it is not a general damage bonus against cavalry, artillery, or every infantry class.
When the investment matters
Research Kalthoff Repeaters when the opponent is relying on Light Infantry and your army will continue to field the units affected by the bonus. Royal Huntsmen and Royal Hunters gain the most listed increase, while the smaller bonus can still help other eligible counters in sustained engagements. It does not change hit points, range, or attack speed, so keep using suitable positioning and protect these units from cavalry and artillery.