Concept
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Created by Boundless
The Third Crusade
Siege of Acre
The Siege of Acre was the first major confrontation of the Third Crusade.
A Medieval painting that depicts the Siege of Acre. Five soldiers in the foreground operate a slingshot. In the background, soldiers defend a high-walled castle, throwing stones on the invaders.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"400px-Siege_of_Acre.jpg."
https://en.wikipedia.org/wiki/Third_Crusade#/media/File:Siege_of_Acre.jpg
Wikipedia
CC BY-SA 3.0.