Played a 10mm game today, using Allies ( British /Spanish/Portuguese) against French. Reasonably balanced armies (Allies 116FS French 120 FS) but French had significantly more and better cavalry. In the end, this advantage proved crucial ( along with some fairly dire dice throwing), as it enabled them to pin Allied infantry and then hit them with infantry attack columns. It got me thinking about what is a reasonable ratio of cavalry to infantry for this period and I wondered what others are using. I did a bit of research re the Peninsula and it seems that French probably had 10 to 15% of a force as cavalry, Allies usually less than 10%. In our game today the French actually had around 25% (6 units as against 9 infantry units) and Allies about 17% (4 units as against 10 infantry units), so obviously not " historical". I'll post an AAR later, when I have sorted the pics from my camera. We all thought the scale was great, as we were able to manouvere units, threaten flanks etc playing on about 8x5 table.
I was high too with 4 Cavalry to 10 Infantry. In my defence though my army is based on part of Zeitens 1st Corps, in bigger games I field the 1st & 2nd Infantry Brigades and the 1st Cavalry Brigade which brings me up to a ratio of 18 to 4 which is nearer to the historical ratio (plus I like the Gee Gees ) .