is one of the few surviving examples of a Roman "scutum," the most popular shield type from the fourth century B.C. to the third century A.D. It was excavated from the ancient city of Dura-Europos ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The ruins of an ...

The Roman army was a vital part of ancient Roman life ... the testudo ('tortoise') when the soldiers would place their shields side-by-side and overhead to create a defensive wall, like the ...