 From 1943 on, he also worked together with the National Committee Free Germany ("Nationalkomitee Freies Deutschland"; NKFD).In 1944, Hoffmann was once again arrested, along with his family on 19 July.The proceedings against him before the Second Senate of the "Volksgerichtshof" on 22 and 23 November ended with a conviction for undermining the fighting forces ("Wehrkraftzersetzung"), conspiracy to commit high treason, and furthering the enemy's cause ("Feindbegünstigung"), along with the attendant death sentence.