Napoleon III style
The Napoleon III style was a highly eclectic style of architecture and decorative arts, which used elements of many different historical styles,and also made innovative use of modern materials, such as iron frameworks and glass skylights. It flourished during the reign of Emperor Napoleon III in France (1852–1871) and had an important influence on architecture and decoration in the rest of Europe and the United States. Major examples of the style include the Opéra Garnier in Paris by Charles Garnier (1862–71), the Bibliothèque nationale de France. and the Church of Saint Augustine (1860–1871). The architectural style was closely connected with Haussmann's renovation of Paris carried out during the Second Empire; the new buildings, such as the opera, were intended as the focal points of the new boulevards.
Line infantry
In the second half of the 19th century, the coming of mass production and new technologies, such as the Minie ball, allowed European armies to gradually equip all their infantrymen with rifled weapons, and the percentage of line infantry equipped with muskets fell. In the American Civil War, both Northern and Confederate armies had only a few line regiments equipped with the old-style smooth-bore muskets. However, France, due to Napoleon III, who admired Napoleon I, had 300 line battalions (comprising an overwhelming majority) even in 1870. Although the French line infantry received Chassepot rifles in 1866, it was still being trained in the use of close formations (line, column and square), which was changed only after the dethronement of Napoleon III. This was common practice in all conventional Western armies until the late 19th century, as infantry tactics and military thinking had yet to catch up with the new technological development.