Flag

Flags were tools used by many different factions to increase their influence over a certain location. The Assassins were notorious for removing flags to hinder the Templars. Both Altaïr Ibn-La'Ahad and Ezio Auditore da Firenze were known to collect them.

High Middle Ages

Flags were scattered by members of various factions throughout the Holy Land to lay claim to particular regions of territory. There were different kinds of flags, each representing a different faction. Present in each district visited by Altaïr during his Hunt for the Nine, they represented the key military powers in the region.

Image	Flag name	Location	Number of flags
	Assassin flags	Masyaf	20
	King Richard flags	Kingdom	100
	Saracen flags	Damascus	100
	Teutonic flags	Acre Middle District	33
	Templar flags	Acre Rich District	34
	Hospitalier flags	Acre Poor District	33
	Jerusalem crosses	Jerusalem	100

Renaissance

Ezio standing near a Borgia flag

The Borgia also used flags to increase their control over Italy. There were 101 Borgia flags to collect in Rome. However, art merchants in the city sold maps which made it easier for Ezio Auditore da Firenze to find and remove all of the Borgia flags. An additional method to locate the flags was through Ezio's use of Eagle Vision, thus marking the flag on the map. Collecting all 101 flags rewarded Ezio with the Borgia cape. Additionally, during the Venetian games of Carnevale, the "Capture the Flag" event used a flag that Ezio had to retrieve and return to his starting point to score. 

Golden Age of Piracy

In the Golden Age of Piracy, mostly all the ships had a flag on the top of their mast to show for which country they sailed. During a boarding of an enemy vessel, Edward Kenway and Adéwalé would sometimes cut down the ship's flag upon claiming it.

Association	Flag
English flag	File:English Flag.png
Spanish Flag	File:Spanish Flag.png
Portugeuse Flag	File:Portugeuse Flag.png
Edward Kenway's Flag	File:Pirate Flag.jpeg
Slave Ship Flag	File:Slave Ship Flag.png
Slave Liberators Flag	File:Salve Liberators Flag.png

Trivia

• In Assassin's Creed, Altaïr sometimes had to prove himself to informants by collecting several Assassin flags in a certain amount of time. Upon finishing the task, Altaïr would receive information about his target.
• The Capture the Flag achievement could be earned by collecting the 101 Borgia Flags scattered around Rome.