A lot of what was done in the name of National Socialism was pure evil it is true, but the very familiar newsreel footage of troops marching past in lockstep with a military band opposite the reviewing platform playing them through wasn't, it was traditional Prussian ceremonial. Ditto the torchlight parades. As BDA says every dignitary, leaving or visiting gets the treatment, see numerous videos on YouTube. Here's a recent daylight visit :-
Mind you, they've long since dropped the lock/goosestep to distance themselves from those terrible times. You'll notice that they sit for their national anthems. A procedure recently adopted following the Chancellor's well publicised shaking episodes.