During the early stage of Napoleon's incursion into Russia, Bagration commanded the 2nd Russian Army deployed close to
Vileyka, Belarus. The French march on Vilnius intended to split Bagration's forces from Barclay de Tolly's, who assumed overall command. Napoleon would then destroy Bagration's 2nd army with a combined hammer and anvil operation conducted by King
Jerome Bonaparte, Marshal
Davout and Prince
Eugene after he falsely assumed they ran into Bagration's army when it were only elements of General
Dmitry Dokhturov's cavalry. Confusion, false assumptions and lack of information prevented the French from having a clear picture of the situation. On the other side it was not much better. Conflicting orders and lack of information had almost placed Bagration in a blind march straight into Davout's forces. Mud tracks, supply problems, weather and command dispute among the French gave Bagration enough time to join with Dokhturov and assume command over a 45,000 men strong force. Having already lost a large portion of his troops to skirmishes, bad weather condition and diseases, Marshal Davout was reluctant to fight Bagration without Jerome first reinforcing him. The French cavalry was defeated twice by General Platov so that they were kept in the dark. Bagration wasn't better informed with both sides overestimating the other's strength. Davout thought Bagration had some 60,000 men and Bagration thought Davout had 70,000. Bagration was getting orders from both Alexander's staff and Barclay (which Barclay didn't know) and left Bagration without a clear picture of what was expected of him and the general situation. This stream of confused orders to Bagration had him upset with Barclay which would have repercussions later. Even though Barclay de Tolly was given overall command as minister of war, Bagration was not subordinate under him since he was the older general. This is a reason why he constantly received orders from Tsar Alexander and Barclay at the same time. Despite massive losses among the French, their rapid advance by force march towards Moscow repeatedly prevented de Tolly from establishing a defensive position and was forced to retreat every time he intended to. The commander in chief refused to put up a fight despite Bagration's numerous urging. De Tolly's continuing resistance to give battle would later lead to his removal from his position.
Battle of Mogilev The battle of Mogilev, better known as
Battle of Saltanovka, was the result of Bagration's unsuccessful attempt to unite with the Russian main army after he had suggested a pre-emptive strike on the French to tsar Alexander. His 2nd army got intercepted when trying to reach Barclay de Tolly's 1st army and clashed with Marshal Davout's forces at the Dnieper river. In order to break through the French lines at Mogilev, Bagration deployed the 20,000 men strong 7th corps led by General
Nikolay Raevsky. On the opposing side marshal
Davout's corps consisting of five divisions with a total strength of 28,000 men had formed defensive lines around Saltanovka. Davout waited for the approaching Russians and set them under massive musket volleys and artillery fire. Raevsky continued the advance personally leading his men in the assault. Despite great determination of the Russian troops, the French managed to repel the attack along the entire line. Davout then mounted a counter assault which threw the 7th corps back, although Raevsky was able to fend them off repeatedly until Bagration decided to order a general retreat when his army got also struck by other French forces at the flanks and rear. In order to avoid complete envelopement he quickly withdrew to Smolensk. Both sides suffered heavy losses, but Bagration misjudged the situation, believing he fought Napoleon's main army when it was only Davout's forces and some reinforcement. This highlighted the poor communication between the Russian armies. However at the same time Bagration's decision to withdraw thwarted Napoleon's plan to destroy the Second Western Army and he was eventually forced to fight a unified Russian force at
Smolensk, which is what happened because Bagration fearing another attack, retreated to Smolensk and waited for Barclay to reinforce him.
Battle of Smolensk On 14 August 1812, the three Marshals Murat, Davout and Ney crossed the
Dnieper River on quickly constructed pontoon bridges. The plan was to race toward the city of Smolensk, taking it without a fight. Napoleon saw Smolensk as a vital supply and replenishment base from where he would march to the north to attack the rear of the Russian main forces under Barclay de Tolly. The town had also symbolic, religious importance for the Russian side. Unfortunately for the French, conflicting orders and a breakdown in communication had already led Bagration to disobey orders and instead of marching west, he occupied Smolensk to the south. By 16 August, French forces found the city heavily garrisoned by Bagration's troops. He got further reinforced with the arrival of de Tolly's army. Napoleon, however, assumed the Russians would fight outside the city to avoid the destruction of historical monuments, which did not happen. The fight for Smolensk started on 16 August 1812 with Napoleon's forces of three corps capturing parts of the town's suburbs but being repelled soon after. Continuous artillery shelling set the town, which consisted of mostly wooden buildings, ablaze, but the French didn't manage to get past the suburbs and to the walls as they lacked ladders and other equipment. Inflicting heavy losses on the attackers, the Russian garrison was able to hold its positions. However, the widespread fire forced Bagration and de Tolly to abandon burning Smolensk on 18 August 1812. The battle ended inconclusively, with the Russian armies retreating and Napoleon conquering but as quickly leaving what was left of the city as it was of no use anymore.
Guerrilla warfare From the very beginning of the invasion, Bagration had understood that the invasion was not an ordinary one, but rather a nationwide war. Local citizenry displayed great bravery where they could against small French units, particularly around Smolensk but also in other parts of Russia. Sporadic attacks from small diversionary groups of lightly armed peasants had already caught Bagration's attention earlier and he was fascinated by their determination and effectiveness. From then on he was convinced that a smart cooperation between irregular forces and the regular Russian armies would be the only method to stop Napoleon's advance. His aide-de-camp, vice Colonel
D.V. Davydov, commander of a Hussar regiment, shared Bagration's views on a
guerrilla movement and proposed a possible course of action. Bagration approved the proposal but, when he presented the plans to Kutuzov, the commander in chief only allowed a very limited number of troops to be provided for such operations. Davydov gave his word that he would take full care and responsibility for the supplies and action of his troops, only dissatisfied about the resources he considered very insufficient, asking Bagration to give him at least 1,000 Cossacks. Bagration, much as he wanted to meet his officer's request and carry out that operation himself, did not want to disobey Kutuzov, and replied: "I would give you 3,000 of them to start with, for I do not like to act superficially, but I can not even speak about it; Knyaz (ie the Prince) has defined the composition of the group himself; it is necessary to obey." Afterwards Bagration wrote the following instruction to Davydov: Bagration then also wrote letters to General Vassilichikov and General Karpov regarding the allocations and general information about the best Cossack and Hussar units available. On the request of Davydov he provided the vice colonel a copy of his map of the Smolensk province and when parting wished the young officer the best of luck, and also hoped for his success. His confidence would soon be emphasized when the guerrilla movement developed wide scope. Soon, besides Davydov's movement, other groups emerged: those of General Dorokhov, Captain Fisher, Captain Seslavin, Colonel Kudashev and many others. These groups successfully strove against the French, combining their activities with those of peasant guerrilla groups. Bagration became the author of the first real tactical instructions for such activities and one of the founders of the Russian guerrilla movement against Napoleon. His subordinates quickly carried him to a safe place away from the fight while trying to conceal what had happened, but Bagration's absence was soon noticed. Rumours of him being killed spread and the morale of his troops began to increasingly waver. Bagration, now unable to control the situation, insisted on not being moved from the field until the battle was decided, hoping for the success of the 2nd Cuirassier Division of General Duka. The Cuirassiers managed to defeat the forces of Marshal Ney but the news of Bagration being hit quickly spread and brought confusion and morale collapse within the 2nd Army. Its management broke down so that the Russian forces were starting to abandon their positions in the chaos and to retreat from the overwhelming French assault. The Bagration flèches were abandoned and left to the French, but it had cost them a huge price. From the 60,000 French soldiers who participated in the operation, about 30,000 were killed or wounded. Russian casualties were also high, but fewer. The battle, however, ended inconclusively, with both sides returning to their initial deployment zones. The battle drained from Napoleon his last fighting capabilities and resources and finally forced him to abandon his plan of forcing Russia into a second
Tilsit when he entered an empty Moscow. Bagration was evacuated to Simy (today
Sima), a village in the Vladimir province, and died there of his wound on 24 September 1812 at the age of 47. ==Tactics and doctrine==