Battle of Maloyaroslavets

The Battle of Maloyaroslavets took place on 24 October 1812 as part of the French invasion of Russia. It was Kutuzov's decisive battle to force Napoleon to retreat northwest over Mozhaisk to Smolensk on the devastated route of his advance with a higher probability of starvation.
Prelude.
The last major battle had been the Battle of Tarutino on 18 October 1812, that was won by the Russian army.
A great part of the large mob of non-combatants, invalids from the hospitals, women, fugitive inhabitants of Moscow, whose number can only be guessed at, was directed upon Vereia and the straight road to Smolensk and only the fighting force was to march towards Kaluga.
On 19 October 1812, Napoleon had retreated from Moscow and marched south-west to Kaluga, Eugene de Beauharnais leading the advance
The French army leaving Moscow was estimated by Wilson: 90,000 effective infantry, 14,000 feeble cavalry, 12,000 armed men employed in the various services of artillery, engineers, gendarmerie, head-quarter staff, equipages, and commissariat, and more than 20,000 non-combatants, sick, and wounded.
On the 23 October 1812 Beauharnais drove General Dokhturov out of Maloyaroslavets.
Battle.
On the 24 October 1812 Dokhturov entered the town from the south and found the French spearhead had seized a bridgehead. Fierce fighting began. General Raevski arrived with 10,000 more Russians; once more they took the town, though not the bridgehead. De Beauharnais threw in his 15th (Italian) division, under Domenico Pino (Minister of War of the Kingdom of Italy), and by evening they had again expelled the Russians. During the course of the engagament the town changed hands no fewer than eight times and it was quoted that in particular the Italian Royal Guard under Eugène de Beauharnais 'had displayed qualities which entitled it evermore to take rank amongst the bravest troops of Europe'. Marshal Kutuzov arrived and decided against a pitched battle with the Grand Army the next day, and to retire instead to the prepared line of defense at Kaluga. The mainly French and Italian forces won a victory on the day, but Napoleon might have realized that "unless with a new Borodino" the way through Kaluga was closed. This allowed Kutuzov to fulfill his strategic plans to force Napoleon on the way of retreat in the north, through Mozhaisk and Smolensk, the route of his advance that he had wished to avoid. French casualties were about 6,000-8,000, while the Russians lost about 8,000 men killed and wounded.
Kutuzov's strategy.
On the 25 October 1812 at about two in the morning after the battle Kutuzov retired his army in perfect order southwards away from the French army behind the rivulet of Koricza to secure the road to Kalouga. The British general Wilson who wanted Napoleon to be attacked protested against this strategy. Kutuzow replied to him, here simplified for a better understanding: "I am by no means sure that the total destruction of the Emperor Napoleon and his army would be such a benefit to Russia; his succession would fall to the United Kingdom whose domination would then be intolerable."
Aftermath.
On the same 25th, at daybreak, Napoleon nearly was caught by a Cossack regiment but was saved by a corps of grenadiers.
Since the same 25th Napoleon carried a bag containing a lethal poison using a string around his neck.
After a victory in the Battle of Maloyaroslavets Napoleon decided just two days later to retreat over Mozhaisk on Smolensk for reasons unknown resulting in the strange detour in the attached Map of Napoleon's Invasion of Russia at Maloyaroslavets.
On the 26th Napoleon again set out for Maloyaroslavets...he ordered the retreat of his own army by Mozhaisk on Smolensk.
Before Napoleon could come to such a conclusion he must have been very conscious of the extreme weakness of his army, for the march he now decided on undertaking was one of two hundred and sixty miles through a devastated country, whose towns, sacked and burnt, offered no shelter or supply against the inclemency of winter.
On Kutuzov's order Platow and his Cossacks directly followed Napoleon. The next major battle for the Russian army was the Battle of Vyazma.
Kutuzow "escorted" Napoleon on the more southern roads with better supply of food and shelter, securing the south against the French army. The next battle for Kutuzov was the Battle of Krasnoi.