Final answer:
The military term for all the marching the men do is humping. Roman soldiers, for example, were expected to be able to march over 20 miles in a day's march while carrying a heavy pack.
Step-by-step explanation:
The military term for all the marching the men do is humping. In the context of the question, humping refers to the physical act of marching and carrying heavy packs for long distances. Roman soldiers, for example, were expected to be able to march over 20 miles in a day's march while carrying a heavy pack. This physical endurance and discipline were crucial for soldiers to be ready for battle.