In Stalag IV D he certified a number of prisoners as insane, who were consequently repatriated, and then convinced the Germans of his "own" insanity and returned to Britain the same way.
He certified a number of prisoners as insane. This is in Stalag IV D. Prisoners as insane were consequently repatriated. Prisoners as insane were then convinced the Germans of his "own" insanity the same way. Prisoners as insane were returned to Britain the same way.