"Ships 13 skilled Halberdiers from the homeland."—In-game description
Quatrefage is a technology in Age of Empires III that is unique to the Spanish and can be researched at the Church once the Fortress Age is reached and the Royal Decree to Claim the New World Home City Card has been sent. Once researched, 13 Guard Halberdiers will appear in the Home City shipment point.
Quatrefage is the only way for the Spanish to acquire Halberdiers.
- Unlike other similar technologies, this technology does not rename the Halberdiers.
- The Halberdiers shipped by this technology always speak in Dutch despite of being used by the Spanish.
|Unique Church/Mosque technologies|
|British||Thin Red Line · The Black Watch · Roger's Rangers|
|Dutch||Coffee Trade · Waardgelders · Stadhouders|
|French||Code Napoleon · Garde Imperial 1 · Garde Imperial 2 · Garde Imperial 3|
|Germans||Tilly's Discipline · Wallenstein's Contracts · Zweihander|
|John Black's Mercenaries||Indian Friendship · Customized Merc Weapons|
|Knights of St. John||Corselet · Tax Burden · High Crusade|
|Ottomans||Tufanci Corps · Topcu Corps|
|Portuguese||Encomienda Manor · Besteiros · Order of the Tower and the Sword|
|Russians||Westernization · Kalmucks · Petrine Reforms · Bashkir Ponies|
|Spanish||Corselet · Quatrefage · Wild Geese|
|United States||Grand Encampment · American Patriots|
|All of the listed technologies require the Royal Decree Home City Cards unique for each civilization|