defendant, in various places within the German Reich, and at all times beginning on December 11, 1941, and continuing thereafter up to and including May 8, 1945, he then and there being a native-born citizen of the United States, and a person owing allegiance to the United States, in violation of said duty of allegiance, did knowingly, intentionally, and traitorously adhere to the enemies of the United States, and more particularly, to wit, the Government of the German Reich, and the German Radio Broadcasting Company and the officials and employees thereof, giving to the said enemies of the United States aid and comfort within the United States and elsewhere; that the aforesaid adherence of the defendant and the giving of aid and comfort by him to the aforesaidenemies of the United States "consisted of working as a radio speaker and commentator in the U. S. zone of the Short Wave Station of the German Radio Broadcasting Company, a company controlled by the German Government, which work included the preparation and composition of commentaries, speeches, talks and announcements, and the recording thereof for subsequent broadcast by radio from Germany to the United States"; that these activities of the defendant "were intended to persuade citizens and residents of the United States to decline to support the United States in the conduct of said war, and to weaken and destroy confidence in the administration of the Government of the United States." Paragraph 4 of the indictment enumerates 23 overt acts alleged to have given aid and comfort to