I personally use 6 stands with 2 horse per stand at 40mm per stand for 240mm.
Many use 25mm per horse, and put 10 horse across for 250mm.
I believe both are common.
There can be no doubt that the success of the attack on and stand against the enemy at St. Lambert sur Dives can largely be attributed to this officer’s coolness ... London Gazette, no.36812, 27 November 1944
We use a hybrid of what Al and Grant are doing ...
12 man units in two ranks (for standard sized) - 2 figs on a 40x50mm base
.. I think that the poorest he that is in England hath a life to live, as the greatest he; ... and I do think that the poorest man in England is not bound in a strict sense to that government that he hath not had a voice to put himself under
We use indivisually based cavalry figures(in 12 fig units) and deploy them on table in 1or 2 ranks as required... have also recently allowed our cavalry to form attack column formation too. this was used see Murat at Liebertolkwitz esp if terrain or cavalry quality was poor Peter
afghan quote;"you westerners have watches,we have time."