Got the chance to test this scenario using 3 block French cavalry yesterday, and the French still won 16-10. However, the English were quite unlucky with their rolls, with several air swings.
Moreover, the dynamic of the game certainly changes, the French can no longer rely upon harder hitting power and stronger units to use brute force to win. My previous experience was this is a 3-5 card play game, with the French cavalry smashing straight up the centre for the win. This time round the French lost 2 units, and managed to exit 3 blocks over a 50 minute game (on VASSAL) in a pretty tense match. The main problem we had was the card decks, with both the Command deck and Tactician deck turning up a lot of infantry cards that weren't much use. I'm considering a smaller deck for these scenarios, just to weed out the over powerful or narrow focus cards that sometimes can upset these scenarios.
Overall, I found the French 3 block version was certainly no worse than the original, it changed the dynamic considerably and made for a tense match which followed the historical narrative somewhat more closely.
Glory is fleeting, but obscurity is forever.
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