Answer:
Propaganda, supplied by the HJ Gliederung ( structure) and also from other propaganda mills and millers like Joseph Paul Goebbels. Posters, songs, marching parades and so on- beat the HJ drum. the role of the higher levels as a sort of ROTC for Army and SS men was stressed in some ads. It should be noted the Hitler Youth was founded by Baldur Von Schirach- governor of Vienna and Not- strictly speaking, Hitler himself. Von Schirach also made up the HJ theme song. later leader was SS officer- at least Field Grade- Artur Axmann. Under Axmann"s command the l2Th SS Panzer division was directly staffed from Hitler Youth personnel. Von Schirach survived the war and did time after the Nuremburg trials- I have read about him and he almost seems like a refined- nice guy, not a Hate maniac like Goebbels.- well they tried to present a wholesome Youth Image!