 He was arrested in August 1933, charged with preparing to commit high treason (""Vorbereitung zum Hochverrat"") and sentenced to eight months of detention, which he spent at the Bautzen Correction Centre.He was released in June 1934 but appears to have continued to undertake illegal political activities and was arrested again in June 1935, faced the same charge as a before, and was sentenced to a further two years.He was initially taken back to Bauzen before being transferred, in 1937, to Buchenwald where at one stage he was put in charge of the camp post office.