In the Battle of Wertingen Imperial French forces led by Marshals Joachim Murat and Jean Lannes attacked a small Austrian corps commanded by Feldmarschall-Leutnant Franz Xaver von Auffenberg. This action, the first battle of the Ulm Campaign, resulted in a clear French victory. Wertingen lies 28 kilometres (17 mi) northwest of Augsburg. The combat was fought during the War of the Third Coalition, part of the Napoleonic Wars.

Baron Franjo Jelačić Bužimski was a Croatian military officer and nobleman, a member of the House of Jelačić. He began his service in the Habsburg army as a Grenz infantry officer and fought against the Ottoman Empire. During the French Revolutionary Wars he received promotion to the rank of general officer and won an outstanding victory at Feldkirch. His later career proved that his martial abilities were limited. He twice led independent division-sized forces in the Napoleonic Wars, with unhappy results. He was Proprietor (Inhaber) of an Austrian infantry regiment from 1802 until his death.