CF,
You have a point. The one about nurses ocurred to me too.
For drill OTOH you are only partly correct.
In initial training all servicemen are trained to march. Marching is the post efficient way of moving a bunch of people from a to b on foot albeit it takes time to form them up. Look at the old boys at the Cenotaph, they all remembered how to march.
Drill is part of Drill and Ceremonial. It is the Ceremonial for which we need drill. The Guards, the funeral cortage etc are all necessary manifestations. The bands are rightly marching bands and the RAF Colour Sqn is part of our Ceremonial.
So drill and ceremonial are still practised and therefore not in a way anachronistic. Whether the drill and ceremonial in the RAH format should be changes is a different argument. The old Royal Tournament display was the modern display with a mix of modern arms and pageantry. Now I wonder why we stopped that?
So, what format would you suggest for the RAH?