 Complete the following phrase:  The corps was first called into existence during the War of the Third Coalition in 1805. After destroying much of the Austrian Empires military strength in the Ulm campaign, Napoleon ordered his generals to advance toward the Austrian capital of Vienna. The emperor formed a new VIII Corps under Mortier and assigned four divisions to the new organization. Mortiers task was to operate on the north bank of the Danube and protect the French armys strategic left flank. The divisions were led by Generals Jean-Baptiste Dumonceau, Honoré Théodore Maxime Gazan de la Peyrière, Pierre Dupont de lEtang, and Louis Klein. Dumonceaus division transferred from the II Corps, Gazans from the V Corps, Duponts from the VI Corps, and Kleins from the I Cavalry Corps. On 11 November 1805, Mortier with the 5,000 men of Gazans division bumped into a greatly superior force of Russians and Austrians. In the 