Assertion: war elephant | /r/CapableOf | prove to be double-edged sword
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text: Other examples include the Battle of Vartanantz in 451 AD, at which the Sassanid elephants terrified the Armenians, and the Battle of al-Qādisiyyah of 636 AD, in which a unit of thirty-three elephants was used against the invading Arab Muslims, in which battle the war elephants proved to be "double-edged sword".