eli5: How did old militaries (such as ancient Rome) manage to keep fed and hydrated thousands soldiers in long military campaigns over long distance and time?

Question

eli5: How did old militaries (such as ancient Rome) manage to keep fed and hydrated thousands soldiers in long military campaigns over long distance and time?

In: 8

Answer 1

In addition to what others said, one reason for the success of the Roman empire was their infrastructure. They were able to send supplies through their network of well made streets – many of which we still use today!