My thoughts about the French cavalry screen were correct. They were more of a hindrance than a help. They covered the advance of the Swiss from artillery fire.
The Swiss vanguard stormed over the ditch, taking out a battery of guns, before being repelled by supporting pike.
At the end of the evening, the Swiss had managed to gain the ditch in most places. The French reserves did not manage to activate.
At some points the French defenders managed to put up a fight.
But generally speaking the French were no match for the Swiss juggernaut.
So far so good. This week,probably the last game before the festivities, the game will continue. I did forget a factor for the Swiss which I'll add this week. The Swiss are 'grizzled' giving them Up1 defence die.