 In 1916 his younger brother, Ernst-Otto was born, and with the household budget under pressure Rudolf took work as a part-time errand boy, although his mother had to be persuaded to lie about his age for this to be possible.Meanwhile, he moved on from primary to secondary school, hoping to study to become a teacher.His father believed that the option was unaffordable, but his mother took extra work and as he grew older Rudolf also took every opportunity to work during the vacations in order to fund the necessary courses.