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The Circle of Ossus is a fictional secret cult featured throughout the original campaigns of Age of Empires III as the main antagonists to the Black family. The Circle's goal is assert power, obtain eternal life, and riches in the New World.

World Influence[]

The Circle of Ossus has enclaves in Britain, Russia, Prague, Alexandria and Spain. In addition, they possessed a library made of stone in Malta's caves and also held territory near Havana, Cuba, the site of the Ossuary. The battles for the Lake of the Moon took place in the Americas.


Boneguard both aoe3de

The Circle had a strong military, made of forces from the powerful countries of Europe. The core army of the Circle is mainly German, using Uhlans and Doppelsoldners with Crossbowmen and Pikemen but also adopting other units such as Cavalry Archer Scouts in the Andes, British Musketeers and Longbowmen around Warwick's leadership and Lancers that were used in the attack against the Incas. At Acts 2-3, the Circle acquires a secondary Russian Army that serves them at several times. They had their own elite troops, called the Boneguard. They had also tamed white animals, including Jaguars, Wolves, and Cougars, which are featured in the library of stone.


As Pierre Beaumont, an army leader was called Grand Inquisitor, others would presumably have the same title.

Alain aoe3de

Alain Magnan - Alain led a double life, being a commander of the Circle and also the Knights of St. John. He tasked Morgan Black with defending a fort in the Siege of Malta, attacking an Ottoman fortress in the New World, and taking a Spanish treasure fleet. He ordered Morgan to kill the Turkish general Sahin, Elisabet Ramsey - a pirate whom Morgan seemed to have an affection for - and an Inca soldier, which made Black realize the truth, and he was persuaded to destroy the fabled Fountain of Youth. Alain was killed during the battle.

Warwick History DE

Warwick - the British lord was sent to control a colony, but then kidnapped Stuart Black. John Black hunted Warwick for his uncle Stuart, and on the way Warwick became a renegade for attacking a village without authorization and was pursued by the British military. His Boneguard troops led the way for a Russian army to attack the French and British colonies. The Russian army and Warwick were destroyed when John Black sacrificed himself by causing an avalanche in the mountains.

Pierre Beaumont History DE

Pierre Beaumont - he fooled Amelia Black into thinking that he was a prospector looking for workers whom he would share the gold in his mines with, then tried to kill her. His plans were scuppered when the aging Ká:nien warned Amelia, who almost fell into the trap. The United States army destroyed several Circle bases, until finally, at the Ossuary in Havana, Amelia shot Beaumont in a last stand battle and soon the siege destroyed the Circle for good.


  • The Circle appears to be strongest in Act II, but weakest in Act III.
  • While the boneguard was the core of the Circle armies, it would later become the entire army as they grew to lack any supplements other than them.
  • The Circle, by default, have exactly the same technology tree as the British. They even share the same capital, which is London.
    • Only the Rocket and Longbowman have voice clips. All other units do not have voice clips.
    • The developers must have altered their technology tree in Acts I and III, where they have trainable units nearly identical to the Germans and the Boneguard units.
  • Their architectural style is the polar opposite of John Black's Mercenaries' style.
    • All buildings except the House use the German architectural style.
    • They use Manor Houses, like the British.


Civilizations in Age of Empires III
AfricanFlag Ethiopian aoe3de Ethiopians · Flag Hausa Hausa
AmericanFederal American: Flag MexicanDE Mexicans · Flag American act3 aoe3de United States
Native American: Flag AztecDE Aztecs · Flag IroquoisDE Haudenosaunee (formerly Iroquois) · Flag IncanDE Inca · Flag SiouxDE Lakota (formerly Sioux)
AsianFlag ChineseDE Chinese · Flag IndianDE Indians · Flag JapaneseDE Japanese
EuropeanFlag BritishDE British · Flag DutchDE Dutch · Flag FrenchDE French · Flag GermanDE Germans · Flag ItalianDE Italians · Flag MalteseDE Maltese · Flag OttomanDE Ottomans · Flag PortugueseDE Portuguese · Flag RussianDE Russians · Flag SpanishDE Spanish · Flag SwedishDE Swedes · Polish · Danes
AfricanAkan Settlement Icon Akan · Berber Settlement Portrait Berbers · Somali Settlement Portrait Somalis · Sudanese settlement portrait Sudanese · Yoruba settlement portait Yoruba
AsianBhakti aoe3de Bhakti Temple · Jesuit aoe3de Jesuit Mission · Native shaolin site icon portrait Shaolin Temple · Sufi aoe3de Sufi Mosque · AOE3DE Tengri Tengri Shrine · Udasi aoe3de Udasi Temple · Zen aoe3de Zen Temple
EuropeanBourbon icon portrait-1 House of Bourbon · Habsburg icon portrait-1 House of Habsburg · Hanover icon portrait-1 House of Hanover · Jagiellon icon portrait-1 House of Jagiellon · Oldenburg icon portrait-1 House of Oldenburg · Phanar icon portrait-1 House of Phanar · Vasa icon portrait-1 House of Vasa · Wettin icon portrait-1 House of Wettin · Wittelsbach icon portrait-1 House of Wittelsbach
Native AmericanApache aoe3de Apache · Aztec native icon aoe3de Aztecs · Carib aoe3de Carib · Cherokee aoe3de Cherokee · Cheyenne aoe3de pre update Cheyenne · Comanche icon aoe3de Comanche · Cree aoe3de Cree · Iroquois aoe3de Haudenosaunee · Huron aoe3de Huron · Klamath settlement portrait Klamath · Sioux aoe3de Lakota · Lenape warrior portrait Lenape · Mapuche icon aoe3de Mapuche · Maya aoe3de Maya · Navajo aoe3de Navajo · Nootka aoe3de Nootka · Inca native icon aoe3de Quechua (formerly Incas) · Seminole aoe3de Seminole · Tupi aoe3de Tupi · Zapotec icon aoe3de Zapotec
CampaignUnited States flag revolt DE Black Family Estate · EIC Flag AoE3DE British · Circle of ossus Circle of Ossus · Flag John Black's Mercenaries DE John Black's Mercenaries · Flag Maltese Cross Knights of St. John · Flag American act3 aoe3de United States
Historical BattlesBarbary States flag revolt Barbary Pirates · Flag CanadianDE Canadians · Flag Ethiopian aoe3de Ethiopians · Flag Moroccan Moroccans · Flag Somali aoe3de Somalians · Flag Tatars aoe3de Tatars · Flag American act3 aoe3de United States