Call to war! Twenty Plumed Spearmen arrive at your Home City Gather Point.
—In-game description

Inca War Party is a Big Button technology in Age of Empires III: Definitive Edition that is unique to the Incas and can be researched at the Town Center once Inca Raiding Party is researched and the Industrial Age is reached. Once researched, 20 Plumed Spearmen will appear at the Home City shipment point.

This technology is cost -effective in terms of total resources. 20 Spearmen costing 2,000 food, 400 wood, total 2,400 resources versus the technology costing 1,800 total.

With the Industrial Age Old Ways Home City shipment, the cost is reduced to 300 food, 300 wood, 300 coin.

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