In both rules set there're no commanders that need to be present on the battlefield
Wott? I could stay at home? Interesting!
I could play French. They marched in close columns to avoid the long time to form up on the battlefield.
The French could and did, however, marche in serré or dense columns, which would reduce them to 40% of normal length, ...
Quoted after "Imperial Bayonets" from Nafziger
And this normal length is already only 64% of a Russian march column.