Freud and the Train Crash

After World War I, Freud has this big turn in 1920. It turns towards the later work where it's his most speculative work. But at the forefront, he's talking about dreams from some of the soldiers that return from the war and their anxiety dreams and how they're reliving this trauma. He supposes that the anxiety induced in the dream is this means of retroactively preparing anxiety as a defense for the traumatic events of war. That's what where anxiety becomes, again, something potentially quite positive, or at least we have a fantasy that we might be able with the help of anxiety to be prepared for trauma which is to come.