few minor redoubts on the left bank, yet the French advanced over the river to give battle, squandering their advantages and incurring casualties The Battle of Heilsberg was fought four days before the decisive Battle of Friedland. French Army losses 1,398 killed, 10,059 wounded, 864 captured Three units lost their eagles, and Digby Smith places the losses higher than Clodfelter, at 1,398 killed, 10,059 wounded and 864 captured. Nicolas Jean-de-Dieu Soult's IV corps sustained the majority of losses: 8,286, and General François Xavier Roussel, Chief of Staff of the Imperial Guard, was killed. Three generals were wounded, and Jean Lannes' corps lost 2,284 killed and wounded. Russo-Prussian losses Disputes over the killed and wounded remain. Clodfelter estimates 6,000 killed and wounded. In addition, generals Koschin, Warneck, and Pahlen were killed; Dmitry Dokhturov, Werdrevski, Fock, Zakhar Dmitrievich Olsufiev, Duka, Laptiev, Passeck and Duke Charles of Mecklenburg were wounded. The Russian commander, Bennigsen was sick all day, but remained on his horse despite falling off unconscious several times. Digby Smith says that the Russian Prussian force lost 2-3000 dead, and about 5-6000 wounded, and they lost two guns. Notable officers of the French Army present were: Commandant in chief : Napoléon Bonaparte Marshall Louis-Alexandre Berthier, prince de Neuchatel Marshall Joachim Murat Marshall Nicolas Jean-de-Dieu Soult Marshall Jean Lannes Major General Nicolas Charles Oudinot Major General Jean-Antoine Verdier Colonel François-Joseph d'Offenstein (made Brigadier general further to this battle) Notable officers of the Russian Army present were: Commandant in chief : Bennigsen was sick, but remained in command Marshall Matvei Platov Marshall Prince Gorchakov Marshall Dmitry Dokhturov (wounded) Marshall Prince Bagration Major General Fabian Steinheil References Works cited External links Spring Campaign 1807. Heilsberg — one of the bloodiest battles of the Napoleonic Wars Battle of Heilsberg Battlefield Anomalies: The battle of Heilsberg French and Russian Order Of Battle of Heilsberg Heilsberg and the battle La bataille de Heilsberg 2007 г. Lidzbark Warminski—первая реконструкция сражения посвященная 200 летию. Napoleans Campaign in Poland Map Database of Heilsberg Conflicts in 1807 Battles of the Napoleonic Wars Battles of the War of the Fourth Coalition Battles involving Russia Battles involving France History of Warmian-Masurian Voivodeship East Prussia 1807 in France 1807 in Germany 1807 in Prussia June 1807 events Battles inscribed on the Arc de Triomphe Joachim Murat