The ARRSEPedia is the British Army encyclopedia that anyone can edit.
22nd July 1812.
A battle in the The Peninsular Campaign.
Much information on this wiki page and this site.
For a good introduction to the Peninsular Campaign, this site is very good.
See also Duke of Wellington, Napoleon, Frog, French, Sharpe, Badajoz, Fuentes Onoro, Talavera and Yet another occasion when the slovenly Frogs were given a richly deserved slapping