His acknowledgement of his Jewish heritage has been frequently proclaimed and used as an example of Jewish resistance to the National Socialist regime .
His Jewish heritage he made in 1942 during one of his periods of captivity by the Gestapo .
His acknowledgement of his Jewish heritage , which he made in 1942 during one of his periods of captivity by the Gestapo , has been frequently proclaimed and used as an example of Jewish resistance to the National Socialist regime .