It was the Army used to invade Russia.
Mainly because Napoleon ordered them to.
His troops got tied down in Spain fighting a guerrilla war.
He gave to Great Britain the pretext to militarily intervene in the Iberian Peninsula's affairs. Had not Napoleon ordered the invasion of Portugal, the Portuguese would not have likely accepted any British interference in their own internal policy.
During the occupation by Napoleon's army.
No. His invasion was intended to punish them for not complying with the Continental System.
The war in Spain from 1807 to 1814 between Napoleon's occupation army and the armies of Portugal and Britain, plus Spanish contingents and guerilla forces, for the control over Spain . The French lost the war and the British commander the Duke of Wellington went on to invade France from the south.
No,Russia never invaded,but France has once invaded Russia...that's for sure! Actually, Russia did invade France, but not as the aggressor country, the way Napoleon did to Russia. In 1814, after Napoleon invaded Russia then retreated back to France, Tsar Alexander I and the Russian Army (along with the Prussian and Austro-Hungarian armies) followed the retreating Napoleon all the way back to France. The Russian army entered France and defeated Napoleon at last. On March 31, 1814, Tsar Alexander I rode into Paris.
The Grand Army.
The years of fighting wore down the Grande Armee with a defeated Spanish Army that never quite completely gave up the battle.
Napoleon Bonaparte was 16 when he finished training and joined the French army.
The Russians were used to the harsh winters. Napoleon's army was not.