In ancient warfare, there were indeed cases of fighting from morning to night, but this does not mean that the soldiers did not eat and go to the toilet all the time. Here are some possible scenarios:
1. **Battle Gap**: In ancient warfare, the two sides were not always at war continuously. There may be breaks between battles, such as negotiations, rest, or redeployment. During these intervals, the soldiers may have the opportunity to eat and go to the toilet.
2. **Logistics Supply**: Ancient armies usually had logistics supply teams to accompany the army, providing food and water to the soldiers. In some prolonged battles, logistics teams may deliver food to the front line at the right time.
3. **Forms of Combat**: Ancient wars had a variety of combat forms, and not all of them were intensive head-to-head encounters. In some battles, both sides may resort to guerrilla, ambush, and other tactics, which provide the soldiers with the opportunity to eat and go to the toilet.
4. **Human Needs**: The basic physiological needs of human beings cannot be ignored. Even in the heat of battle, soldiers look for opportunities to meet these needs. For example, when fighting is temporarily suspended or when there is a night break, soldiers may hurry to eat and go to the toilet.
5. Historical Records: Historical descriptions of ancient warfare tend to focus on strategy and tactics, with fewer detailed descriptions of soldiers' lives. But it can be assumed that in a long battle, the soldiers will definitely find an opportunity to meet their physiological needs.
In general, although it is true that there were cases of long battles in ancient wars, the soldiers did not go without food and toilet all the time. They take advantage of opportunities such as combat breaks, logistical supplies, and tactical shifts to meet physiological needs.