What happens to the prisoners each time they enter a new camp?

When prisoners enter a new camp, they typically experience a systematic process that involves being formed into groups as a means of organization and control. This practice serves several purposes: it allows camp authorities to manage the large number of incoming prisoners more efficiently, facilitates counting and monitoring, and also helps in assigning tasks or roles within the camp. Forming groups is a method of imposing discipline and ensuring that the prisoners can be observed and managed effectively.

The other options do not accurately reflect the common practices in such scenarios. While food and resources might be provided at some point, it is not the immediate action taken upon arrival. Health checks may be part of the procedure later, but they are not the first step in the process. Immediate assignment to work is also less common upon arrival, as the camps often need to first structure and organize the prisoners before they can be assigned to specific tasks. Thus, grouping prisoners as they enter serves as a crucial first step in the camp's operational protocol.