The military training does recall my own days of Basic in 1968, such as the repetitions of "I need some volunteers".
In a world like ours where people are expected to develop an individual moral compass, we would wonder how young adults would believe that the right thing to do is to conquer lands from other people for their own demographic future. But in their culture they were told what their values had to be. They had been told that the world had been taken away from their ancestors by "Jews" and other "inferiors" and they would have to take it back by force. Yet out of this on of the most authoritarian cultures in history (except perhaps for North Korea) developed.
We often hear pundits say that individuals need to have causes bigger than themselves as individuals. Yet, it they don't have free thought, look at what can happen. There is a line in the film, "This isn't just a war, it's a philosophy." Or ideology.