Josef Jakobs SW3, on 4–5 August 1941. The trial was held "in camera" because the German agent had been apprehended in a highly classified intelligence operation known as the Double Cross System. The British were aware that Jakobs was coming because his arrival information had been passed on to MI5 by the Welsh nationalist and "Abwehr" double agent Arthur Owens. After a two-day trial which involved hearing the testimony of eight witnesses, Jakobs was found guilty of spying and sentenced to death. Jakobs's execution took place at the miniature rifle range in the grounds of the Tower of London on 15 August
Josef Kaiser been contemplated by politicians, and the German Labour Front operated in some respects as a branch of government. In 1938 Josef Kaiser became a Nazi Party member. Between 1941 and 1945 Josef Kaiser was head of the "Basic conceptual planning" (""Grundrisstypenplanung"") department at the "Germany Academy for Residential Housing" in Berlin-Buch. In May 1945 war ended, and with it the Nazi régime. For Josef Kaiser it was also the year in which he underwent serious illness. On his recovery he embarked on a striking career switch, enrolling in 1946 at the Dresden Music Academy where he trained for a career