The distinctive black and white banner of the Knights Templar, used as their war flag and symbol during the Crusades.
From Old French 'beau' (beautiful) and possibly 'seant' (appearing). The exact etymology is debated, but it referred to the striking bi-colored standard that became iconic to the military order.
The Beauseant was so feared in battle that its appearance on the battlefield could make entire armies nervous—it essentially functioned as medieval psychological warfare before the fighting even started!
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