Short answers, pulled from the story.
The Battle of Craonne was fought on the 7th of March 1814, during the War of the Sixth Coalition. Fighting on the eve of the battle, the 6th of March, also took place as French forces seized Vauclair Abbey and clashed over Heurtebise Farm.
Lieutenant General Mikhail Semyonovich Vorontsov commanded the Russian corps at Craonne. He deployed roughly 16,300 infantry, 1,000 regular cavalry, 1,000 Cossacks, and 96 artillery pieces on the Chemin des Dames plateau.
Napoleon's French forces won the Battle of Craonne in the sense that they held the battlefield at the end of the day and forced Vorontsov's Russians to withdraw. However, two historians described it as a Pyrrhic victory because French casualties exceeded Russian losses and Napoleon failed to cut off Blücher from Laon.
French casualties ranged from approximately 5,400 to 8,000 by different accounts. The Russians admitted losing 4,785 killed, wounded, and missing, with one source breaking this down as 1,529 dead and 3,256 wounded. Boyer de Rebeval's French division lost two out of every three men.
Wintzingerode's cavalry column failed to reconnoiter its route, and on the morning of the 7th of March chose a bad road. Kleist's Prussian corps took a more direct path, and the two columns collided at Chevregny at 11:00 am, causing a traffic jam. Kleist did not reach Festieux until 4:00 pm, hours too late to threaten Napoleon's flank.
Napoleon was unable to reach Laon ahead of Blücher, and the effort at Craonne had spread his army toward Soissons rather than northward. The French army then sustained a defeat at the Battle of Laon on the 9th and the 10th of March 1814, three days after Craonne.