
Originally Posted by
Swerg
I can't watch the video due to this crappy connection, but...
Reloading on the march was a key factor in the early 18th century tactics of Sweden. The usually infantry proceedure was to fire a volley, advance while reloading, then charge while firing a point-blank volley, or saving a shot for the melee depending on the situation. This was, later in the Great Northern War, also adopted by the Russians.
There's no reason why the ability to reload while moving would vanish, although it'd be something only very well trained infantry could do.
As to the Prussians, they lost to Napoleon primarily because their leadership was under the impression that it was 1762. And that the ghost of Frederick the Great was going to appear and beat Napoleon for them.