What are two rules that are shared with the newcomers by the officer?

From the text:

The officer cleared his throat. "You will have discipline," he said suddenly, without preamble. "You will work hard. You will never answer back, complain, or question. You will not try to escape. You will do this for the Fatherland. You will do it—or you will die." The officer turned smartly on his heel and left.