On January 10, 49 B.C., on the banks of the Rubicon River in southern Gaul (near the modern-day city of Ravenna), Julius Caesar and the soldiers of the 13th Legion waited and weighed their options.

In 55 BC, Rome had its sights set on Britain. Across two attempts, a huge invasion force led by one of the greatest miltary leaders in history, Julius Caesar, landed in Kent. Eventually he would break ...