If artillery brigade with infantry, we know movement is reduced to the slowest mover (10cm).
However, can the infantry move more than 10cm, as long as the brigade remains touching?
The same would be true for changing formation, as no stand can move further than its movement, if the whole brigade moved forward 10cm, but the infantry changed from column to line formation we could have a situation were the front stand moves 10 cm in line with artillery, but the rear stand moves 15 or 20 cm (i have not worked it out), within the infantry movement limit, but more than the brigade limit?
I know this sounds a bit petty, but does make a difference when defending your artillery. How do others move brigades?