Answer:
If I was a Roman general who must make a legion of soldiers from Rome to Colonia Agrippina and a route which I decide is discussed below in complete details.
Step-by-step explanation:
You either voyage beyond the Mediterranean to Carthage or trek by the French Alps into Spain, and sailing beyond the Strait of Gibraltar toward Carthage or Either I would take officers over the Tyrrhenian sea to reach there quicker, or cut beyond the Tyrrhenian sea to Catalina and climb up towards Carthage by ground.