-Napoleons army that he invaded Russia with was made up of people from all around Europe.  Some say it was the most diverse European army since the Crusades.

-Experts say at least 450,000 Grande Armée soldiers came to fight the Russians who had approximately 200,000 soldiers.

-Napoleons troops had to cross the Niemen river to get to the Russian side.

-Napoleon and his troops were able to capture the city of Vilna on June 27th.  They were able to do this with very little fighting.

-The Russian who were then in Smolensk had to retreat.  They torched the city and many residents burnt crops and killed livestock.  This would prevent the French from using those resources.

-The Russians made a stand at the battle of Borindo which is just 75 miles from Moscow.  The causalities on each side were horrific with a total of 70,000 killed.

-On September 14th Napoleon and his troops entered Moscow.  The Russians had used the scorched earth policy on it too.

-On October 19th Napoleon led his troops out of Moscow.  He came to realization that they could not be able to survive the harsh winter conditions.

-Napoleon was now down to only 100,000 men who were suffering from the constant attacks, snow and sub-zero conditions

-On December 5th Napoleon left the army under the command of Joachim Murat and 9 days later what was left of the Grande Armée was back across the Niemen river.

-Now Austria, Prussia and Sweden have rejoined Russia and Great Britain in the fight against Napoleon and his men.

-The following March Paris had been captured and Napoleon was exiled to the Island of Elba.  He made of last regain his power but was defeated at the Battle of Waterloo

https://www.history.com/news/napoleons-disastrous-invasion-of-russia

-the napoleonic maneuver , one corps, having made contact with the enemy,  would conduct a feint to the enemy’s front, while the main force would fall on the enemy’s rear.
-napoleon divided his forces into corps capable of operating independently and then coming together for battle.
-Napoleon had a keen eye on each and every aspect in the battlefield, which made his plans for the battle more likely to be successful.

-Napoleons charisma helped not only himself in battle but encouraged his soldiers.

-Napoleon maintained a disciplined and talented army by rallying his troops with his powerful speeches.

-Napoleon controlled every detail of the battlefield, with an attack-based formula playing on the enemy’s weaknesses.

-Although Napoleon’s tactics we usually successful, he never made drastic changes to them, which is likely the reason he was defeated in 8 battles.

-Napoleon had an extraordinary ability to visualize troop locations and recall information about munitions and supplies.