Wilhelm Rettich belonged to that generation of those whose work and life was deeply affected by the First and Second World Wars. Captivity, persecution, hiding and losses scarred his life. In 1933, he emigrated to the Netherlands, where he survived the war in hiding. Rettich worked a great deal for the radio, a young and progressive medium at that time. Although he became a Dutch citizen after the World War II, he returned to Germany in 1964.