When Austria joined the ranks of the allies during the War of the Sixth Coalition, Charles was not given a command and the post of commander-in-chief of the allied Army of Bohemia went to the Prince of Schwarzenberg. Charles spent the rest of his life in retirement, except for a short time in 1815 when he was military governor of the Fortress Mainz. In 1822 he succeeded to the duchy of Saxe-Teschen. In 1830 Charles was a candidate for the throne of Belgium.
When Austria joined the ra.nks of the allies during the War of the Sixth Coalition, Charles was not given a command and the post of commander-in-chief of the allied Army of Bohemia went to the Prince of Schwarzenberg. Charles spent the rest of his life in retirement, except for a short time in 1815 when he was military governor of the Fortress Mainz In 1822 he succeeded to the duchy of Saxe-Teschen. In 1830 Charles was a candidate for the throne of Belgium.