Now imagine 1000 such pages, and 20 such books. That's Russia in the early 40s.
Imagine 6 books - that's the Jews in Germany.
Imagine half a book - that's the Americans who left their peaceful homes in 1942 and never came home.
I like to think in terms of stadiums, because I know exactly what 50-60k people look, sound, and pee like. In Vietnam we lost one stadium, in II we lost 10. The Russians lost 400.