During the Battle of Bidassoa (or the Battle of Larrun), General of Division Jean-Baptiste Drouet, Comte d'Erlon led the left flank, which was made up of four Divisions.
In the Battle of the Bidasoa (or the Battle of Larrun) on 7 October 1813 the Allied army of Arthur Wellesley, Marquess of Wellington wrested a foothold on French soil from Nicolas Soult's French army. Fearing an allied thrust over the Maya Pass and down the Nivelle River to the sea, Soult gave General of Division Jean-Baptiste Drouet, Comte d'Erlon 19,200 men to hold his left flank. D'Erlon's corps included the soldiers of Generals of Division Maximilien Sebastien Foy, Jean Barthelemy Darmagnac, Louis Jean Nicolas Abbe, and Augustin Darricau. 
