Salamanca is one that I'd like to understand better.
The important factor in this battle would be the wounding of Marmont right at the start of the british responses. With no overall commander, each French division fought the battle in an independent manner.
Unlike other French armies, this one fought with no corps d'armee structure. The original corps commanders had such personal infighting, that Marmont sent them home before the start of the campaign. If he had not been wounded, Marmont planned to go to the point of contact and control the action himself.
This sounds like the way Wellington fought his divisions as Keegan described it in The Face of Battle.
If there had been a corps commander on the ground, the other divisions in the corps might have been close enough to support Thomieres when his division was attacked, or the commander might have restrained Thomiers from charging too far forward without support.
Gaming this out could be very different.
"These things must be done delicately-- or you hurt the spell." - The Wicked Witch of the West.
"We've got the torpedo damage temporarily shored up, the fires out and soon will have the ship back on an even keel. But I would suggest, sir, that if you have to take any more torpedoes, you take 'em on the starboard side." Pops Healy, DCA USS Lexington.