In that rank he joined the Vistulan Legion and became the commander of the cavalry of that unit. With his men he took part in the Peninsular War and fought in the battles of Mallen, Alagon, Epila and Tudela. In the summer of 1808 he fought in the First Siege of Saragossa.
He joined the Vistulan Legion in that rank and became the cavalry leader of its unit. With his troops, he fought in the Peninsular War at battles including Mallen, Alagon, Epila, and Tudela. In the summer of 1808, he was involved in the First Siege of Saragossa.