I’ve seen high school marching bands give a far better performance and certainly with more energy. In my college marching band were had to be able to do a 221/2” step blindfolded to give a precise 8 steps to 5 yards on the field while playing our instruments. Granted precision marching doesn’t make an effective fighting force, but does show discipline and esprit de corps that would appear very lacking especially in the Belgian unit.
You ought to see the Texas A&M band when they perform a 4 way cross.