1) Ancient Greek artillery
Found on
https://www.crosswordclues.com/clue/polybolos
Polybolos was an ancient Greek repeating ballista reputedly invented by Dionysius of Alexandria, a 3rd-century BC Greek engineer at the Rhodes arsenal and used in antiquity. Philo of Byzantium encountered and described the polybolos, a catapult that like a modern machine gun could fire again and again without a need to reload. Philo left a detaile...
Found on
http://en.wikipedia.org/wiki/Polybolos
No exact match found.
