Taupin transferred again to Spain where he fought in the Peninsular War including the battles of Bussaco and Salamanca. He was appointed to command an infantry division in October 1812 and in January 1813 was promoted general of division. In 1813 he led his division in the battles of the Pyrenees, San Marcial, the Bidassoa, Nivelle and the Nive. In 1814 he conducted a particularly stubborn defense at Orthez and was fatally wounded leading an attack at Toulouse. Ironically, his death came a few days after Napoleon abdicated his throne. His surname is one of the names inscribed under the Arc de Triomphe, on Column 37.