A lokacin da yake a Italiya, Philipp ya fadi a karkashin rinjayar Fascism, ko kuma in ba haka ba ya yi imani da cewa Bolsheviks sun kasance babbar barazana. Bayan da ya koma Jamus a ranar 30 ga watan Oktoba, 1930, ya shiga Jam'iyyar Jam'iyyar Jam'iyyar Jam'iyyar Jam'iyyar Jam'iyyar Nazi. A 1932, ya shiga Stormtroopers (SA, wanda ake kira Brown Shirts), kuma, a shekara mai zuwa, dan uwansa Christoph ya shiga Schutzstaffel (SS). Daga bisani, sauran 'yan uwansa biyu, ciki har da Wolfgang, sun shiga SA. Ta hanyar jam'iyyarsa, Philipp ya zama abokantaka ta musamman na Hermann Göring, shugaban gaba na sojojin saman Jamus (Luftwaffe). A cikin Stormtroopers, ya rike mukamin Obergruppenführer. Bayan da aka nada shi a matsayin shugaban Jamus a ranar 30 ga watan Janairu, 1933, an nada shi a matsayin Oberpräsident (Governor) na Jam'iyyar Nazi na Jamus.
Ya gabatar da wasu aristocrats ga jami'an NSDAP