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 Albert Meisinger Josef Albert Meisinger Josef Albert Meisinger (14 September 1899 – 7 March 1947), also known as the "Butcher of Warsaw", was a SS functionary in Nazi Germany. He held a position in the Gestapo and was a member of the Nazi Party. During World War II Meisinger served as commander of "Einsatzgruppe" IV on Poland. From 1941 to 1945 he worked as liaison for the Gestapo at the German embassy in Tokyo. He was arrested in Japan in 1945, convicted of war crimes and was executed in Warsaw, Poland. Meisinger was born in Munich, the son of Josef and Berta