 Complete the following phrase:  Although the 27th Division was not formed until 1871, its predecessors saw action in the Austro-Prussian War of 1866 against Prussia and in the Franco-Prussian War of 1870-71 on the side of Prussia against France. The Württemberg Infantry Division saw action in the Main campaign in 1866. During the Franco-Prussian War, the Württemberg Field Division fought at the battles of Wœrth and Sedan, and then participated in the Siege of Paris and the 