My play through of the Scenarios in Dominion of Napoleon Bonaparte has now reached the Iberian Peninsular, and Napoleon stands undefeated (apart from the hiccup at The Pyramids). How will the French fare in this first battle of the Peninsular War?

My play through of the Scenarios in Dominion of Napoleon Bonaparte has now reached the Iberian Peninsular, and Napoleon stands undefeated (apart from the hiccup at The Pyramids). How will the French fare in this first battle of the Peninsular War?