We both placed a Cavalry division in reserve and I had a light cavalry division on a Flank March.
My Flank March arrived on turn 3 but really had no place to go on arrival (likely needed a much better plan). We were also unsure what happens if the flanking units are 'blocked' by enemy units up close to arriving table edge as not really defined other than one can charge into contact from off-table, but what if units have to fall back or recall ? are the destroyed ? do they rally off-table ? we have not encountered this before.
Stephen brought on an off-table reserve of 4 Cavalry with a horse gun which was literally crammed up behind a defending Infantry Division and I had my heavy Cavalry as an on table Reserve from start.
We realised that the interpenetration (or actually lack of interpenetration) rules meant these mounted units were very unlikely to get used as essentially badly blocked (especially the Russian Division) and requiring a lot of 'work' to move elsewhere.
The rules allow Mixed Divisions (something not usually seen in the scenarios we have played) which would be a much more flexible use of cavalry (ie in direct support of Infantry Division) but neither of had considered this historically justifiable. However I think the use of the term Division in Shako is a tad more flexible in what it represents.
We sort of gave up on the game (and plunged into waffling session) once we realised we had less than optimal deployments but plan is to re-try next week with Utitsa scenario.
French left with Cavalry in Reserve position. Note clogged deployment of Russians at top left as Cavalry 'stuck' in behind stationary Infantry division. French outflank due to arrive following turn into flank of own Infantry !