Dural Wanger's War

Tolkien was adamant that his books weren't about anything that had actually happened. Tolkien fights in a battle where thousands of men drown in the mud get like sucked down by their boots and like are suffocated while their friends watch. And then he writes a chapter in his book about a marsh filled with corpses that you can see, right? That's what Dural Wanger's war is. First of it is getting trench foot and being like, I'm going to die from this and fucking watching, watching like unimaginable horror.