After the annexation Austria quickly became incorporated into an enlarged Nazi German state. Opposition activism became both more dangerous and, for the politically committed, more urgent. However, for the Bruhas the situation was complicated by Josef's work situation. Fourteen days after the Nazis arrived he was re-employed by Siemens not in his previous post as a foreman, but as a divisional head, in charge of a department containing 300-400 women, two mechanics and his own typist (according to his wife). In financial terms the Nazi take-over triggered a hitherto unknown level of prosperity for the couple. The Bruhas nevertheless joined the resistance group around Alois Houdek. Initially the group was restricted to members of the Czech minority, but it subsequently expanded to include members of the German speaking community who had not previously been politically engaged. Toni Bruha wrote and distributed leaflets encouraging opposition to the government. Group members escorted Jews, escaping from the evolving hardships and dangers of state-mandated antisemitism, to the Swiss frontier. Members also engaged in acts of sabotage. Josef Bruha believed that it was impossible to be certain that no one would be hurt when a target was attacked, so refused to engage in sabotage actions, but the time came when he was sent to Berlin on a training course: Antonia took advantage of his absence to participate. An action in which she took part involved setting fire to – one source uses the term "blowing up" – army facilities. Already pregnant, she cycled with comrades, carrying a large quantity of chemicals that had been smuggled out of a factory, to a block of ten military storage depots containing uniforms, weapons and food rations, in Lobau. No lives were endangered, she later maintained with evident satisfaction.