They are wearing stahlhelms again and doing torchlit parades in front of the leader. Do they not know this is a very bad aesthetic for them, does the Red Army need to roll into Berlin again since they obviously didn't learn their lesson from last time.
Germany was only allowed to keep their military after a brief hiatus because of East Germany.
The US planned on military intervention in East Germany and wanted to use the FRG as a staging ground for a third war.
The DDR demilitarized after the war and even banned military toys (like for kids) until they were forced to remilitarize in response to FRG agression.
Both militaries maintained some of the old traditions, this was one of them.