That was an outstanding performance...great precision!
As far as the side conversation regarding the value of military drill. It is a rich tradition that has it's roots in the days when large armies squared off on the battlefield. Marshalling the troops into position as well as manouvering took co-ordination and a form of precision that's not nessecary these days.
Add to that, the fact that in those days, bright uniforms and adornments were meant to impress and intimidate the opponent.
Nowdays, it's simply Esprit De Corps