Hitler Youth boys kneel before their daggers/Dagger ritual?

I was watching a doentary, Triumph of the Will to be exact; There, just a little before 18 minutes in (17:49) I noticed a group of I'm guessing Hitler Youth boys-kneeling down in a circle, sort of bowing to their daggers stuck into the ground in front of them. I'm wondering if any historian or WWII enthusiast could shed some light on what that was? some type of dagger ritual? Let me know!