Institute of Red Professors
Between 1932 and 1935, Trepper worked to become a GRU agent by learning his trade. After attending KUNMZ University, where he obtained a diploma, he studied history at the Institute of Red Professors and was awarded a degree, allowing him to work as a history teacher in Moscow. Trepper was in constant touch with the Russian intelligence instructors who taught him the practical skills of an espionage agent. At the same time, Orschitzer also attended KUNMZ University for a year. In 1935, Trepper submitted a newspaper column covering art to the newspaper for Russian Jews called "Truth". In the winter of the same year his training was completed.