SHEILA TERRY / SCIENCE PHOTO LIBRARY SHEILA TERRY / SCIENCE PHOTO LIBRARY
Roman soldiers and war machines; detail from Trajan's Column in Rome commemorating the wars against the Dacians (AD 102-106). This image illustrates the significance of the various mobile machines devised by the Roman military, including siege engines, battering rams and missile launchers (ballista, scorpio, aries and tormento), all capable of being dismantled for ease of transport then re-assembled in the field.
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