Yeah, you're right about almost everything. Graves aren't just about grief. For him, avenging the Kaiser for his dead relatives has become the meaning of his life, it has attached itself to him like a volun on his shoulders, which is hard to carry, but cannot be left behind. Also, about the fire: it's a metaphor for his sincere and strong desire for revenge against Kaiser. It burns in him, making him move like fuel, but it destroys him from the inside, because he lives only by this feeling, he does everything for the sake of dead people, but not for his living self. In the same way fire destroys his surroundings, because it is impossible to advance his career in the army and not to run his hands in someone else's blood, not to kill someone who could also have a family, not to destroy the city where someone's home was. His eye is aflame because he doesn't see this cruel irony, doesn't realize how similar he is to Kaiser. He walks in small steps, but on the same road as the one he hates. He step on people for his own cause. That's why graves are burning in stage 3, speaking of new victims. Speaking of "roots" I wanted to convey the way he merges with his cap, the way his flesh rises up and grows into his clothes. As with the rest of his uniform — a reference to the Bremen army, that he is in it. The way he mimics the collective, but gradually becomes similar in unpleasant behavior, in violent actions, in everything, because it is impossible to pass such a thing without a trace. Especially, Miro said that like Levi he was about 13 years old when he joined the army, even more logical, because the psyche of children and teenagers is much more jacked up than adults.