i'd say that you're an effective machine

And out of the hammered brain strange memories are jolted loose, scenes and words and people forgotten, but store in the back of the brain. These may not be important things, but they come back with startling clarity into the awareness that is turning away from reality. And these memories are almost always visions. And then it is over, you can’t hear but then there is a rushing sound in your ears. And you want to sleep more than anything, but when you do sleep your mind is uneasy and crowded with figures. The anesthesia your body has given you to protect you is beginning to wear off, and, as with most anesthesia, it is a little painful.

It slips away so fast. Unless you made notes on the spot you could not remember how you felt or the way things looked. Men in prolonged battle are not normal men. And when afterward they seem to be reticent--perhaps they don’t remember very well.