3638395 Since 13 August 1961 the state frontier of the German Democratic Republic with West Berlin has been reliably protected by the National People\'s Army .... (b/w photo) by German Photographer (20th Century); Private Collection; (add.info.: Since 13 August 1961 the state frontier of the German Democratic Republic with West Berlin has been reliably protected by the National People\'s Army. In erecting the anti-fascist protective wall the worker\'s militia and the People\'s Police forces acted in close conjunction with the National People\'s Army. East German propaganda photo.); Look and Learn / Elgar Collection; German, out of copyright.