"Ships 22 experienced Crossbowmen from your homeland, plus your normal Crossbowmen are improved."—In-game description
Besteiros is a technology in Age of Empires III that is unique to the Portuguese and can be researched at the Church once the Fortress Age is reached and the Treaty of Tordesillas Home City Card has been sent. Once researched, 22 Crossbowmen named Besteiro will appear in the Home City shipment point, all Crossbowmen are upgraded to Veteran (if they otherwise are not yet) and gains 30% hit points and attack – essentially "upgrading" them to the Guard level, and renames all exiting Crossbowmen to Besteiros.
- This technology's name derives from besteiro which means "crossbowman" in Portuguese, thus the renaming is somewhat redundant in a literal sense.
- The Portuguese Expeditionary Company and Portuguese Expeditionary Force, available for the Indians and the Japanese in The Asian Dynasties through the Consulate by allying with the Portuguese, includes Besteiros. Unlike the Portuguese version however, the Consulate version is automatically upgraded in every Age, including the Imperial Age.
|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|