Police command has informed me that officers were carrying their " Arnold batons ", long truncheons used in public order situations.
For the batons suit, all of the symbols are placed within a triangle for further consideration.
While some drum majors wear the same uniform as the rest of the band, setting apart their status with props such as batons and hats, it is more common for the drum major uniform to be an "enhanced" version of the simpler band version.
Capes, batons, braids are all going to most likely get in the way of them showing off their routine.
A minimum of props, or only the props (such as batons) that the drum major has practiced with extensively.