Prior to the school fire, a caption says "Paris 1925". Upon his arrest as an adult, Abel, through his narration, remembers the fire as having happened "twenty years ago". This would place his adult scenes in 1945, but when he joins the French army after his arrest it is before the German occupation of Paris which would place his arrest in 1940. However, Abel is slow-witted and possibly does not have an accurate sense of time.
Count von Kaltenborn: Mesmerizing ritual, songs and torches-- hard to resist. You are quite intoxicated by it, are you? The flames, the flags, it's a big show-- quite overwhelming, for a simple mind. Look at him. His father was a grocer in Leipzig. He stands there in his uniform as if he were selling sardines.
Abel: [voiceover]
Young boys are so bold and courageous. No living creatures are as noble or as beautiful-- and yet so heartbreakingly awkward. I love nothing like I love the young boys. What a privilege, to gather them all in a castle they can call their own! Mostly they trust me, but sometimes they don't. And then I can feel the part of me that is made of stone. Hard and pitiless, I force them to come with me.
Prof. Blaettchen: Brightness is not a characteristic of the German race. We don't want brightness! People say, "Oh, so-and-so is so bright, he has such a clear mind!" No. We mistrust this brightness, this clarity. Let the new African races cultivate brightness. Our sources are in darkness. That is what drives us to unparalleled creativity.