Very difficult to do so given that the units don't really represent a regiment, brigade, division or corps, but are "game units" to give the feeling of the scenario to be fought. Also, the size of the units bear little relation to the real life size of units since these varied considerably from campaign to campaign. Some of the scenarios are scaled differently to others, so there's no real consistency as to what a "game unit" might represent unless you accept it can be fluid.
If you take the 015 Waterloo scenario as an example, for France there are 8 LN units, 1 LT, and 2 LC representing the three corps of line troops and two reserve cavalry corps. Where are the "Heavies" of Milhaud and Kellermann? Do the 8 LNs and 1 LT represent 9 regular infantry divisions? There should be 11 total infantry divisions, excluding any guards. For the cavalry, there were several divisions of both light and heavy, but these are only covered by 2 LCs.
I have long since given up any pretence of historical accuracy with C&CN. It's a fantastic GAME, and it does give an excellent feel of a Napoleonic battle for the most part, but I almost never try to correlate a scenario OOB with the historical one, nor expect necessarily the real-life Napoleonic tactics will always work. I leave that for when I play better simulations such as La Bataille. C&CN provides a great Napoleonic game experience, only takes about 1½ hours, and has connected me with dozens of players around the world.
