Wheeled siege towers and bridges, 13th century (18th century). Artist: Unknown

Wheeled siege towers and bridges, 13th century (18th century). Artist: Unknown

1-153-581 - Ann Ronan Picture Library/Heritage-Images

Wheeled siege towers and bridges, 13th century (18th century). Siege equipment of the type used by Frederick II of Germany, Holy Roman Emperor, for his successful siege of Jerusalem (1229), which ended the 6th Crusade and led to a 10 year truce.

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