After the fall of the Third Reich, the Hamburg School reconvened, and Ludwig Rudolph played the key role in perpetuating the teachings of the Hamburg School. The Hamburg School astrologer Hermann Lefeldt combined Witte's theories with more astrological traditions such as the use of astrological houses. However, other Hamburg practitioners maintained their focus on working only with astrological midpoints , abandoning traditional practices, including the 12 houses and rulerships.