Johann Josef Cajetan Graf von Klenau, Freiherr von Janowitz was a field marshal in the Habsburg army. Klenau, the son of a Bohemian noble, joined the Habsburg military as a teenager and fought in the War of Bavarian Succession against Prussia, Austria's wars with the Ottoman Empire, the French Revolutionary Wars, and the Napoleonic Wars, in which he commanded a corps in several important battles.

The Battle of Novi saw a combined army of the Habsburg monarchy and Imperial Russians under Field Marshal Alexander Suvorov attack a Republican French army under General Barthélemy Catherine Joubert. As soon as Joubert fell during the battle, Jean Victor Marie Moreau immediately took overall command of the French forces. After a prolonged and bloody struggle, the Austro-Russians broke through the French defenses and drove their enemies into a disorderly retreat, while French division commanders Catherine-Dominique de Pérignon and Emmanuel Grouchy were captured. Novi Ligure is in the province of Piedmont in Northern Italy a distance of 58 kilometres (36 mi) north of Genoa. The battle occurred during the War of the Second Coalition which was part of the French Revolutionary Wars.