Many bayonet wounds were fatal. “Around 6 a.m. the emperor summoned Chief Surgeon to report. … Percy elaborated that one of the guardsmen had a bayonet lodged in his chest with such force that the socket had broken. The soldier had died during the operation to remove the blade.” (Arnold – “Crisis in the snows” p. 354)
However not every bayonet wound was deadly. At Eylau in 1807 one officer of the French Guard Horse Chasseurs received 14 (!) bayonet wounds and survived. James Arnold writes: “Lieutenat Rabusson [Guard Horse Chasseurs] suffered fourteen bayonet wounds:
2 to the jaw;
2 in the thigh;
2 in the arms;
3 in the chest;
3 in the face;
and 2 scoured his skull.
Knocked from his horse, Rabusson refused a hussar’s demand to [Russian] surrender. A final saber blow dropped him unconscious into the snow. Miraculously, that evening some of Davout’s infantry found Rabusson still unconscious, carried him to safety, and he survived his ordeal.” (Arnold - "Crisis in the snows" p. 305)