Corporal Lyffned is a soldier in The Witcher 3: Wild Hunt.
Serves the Nilfgaardian Empire
Corporal Lyffned was sent to to command headquarters for medicine and was supposed to take it to the Nilfgaardian Camp
Geermer is a soldier in the opposing faction, the Northern Kingdoms
Lyffned is killed by Geermer, and his cart crashes in the Swamp.
Geermer then tries to steal the medicine however he can't because of Drowners infesting the swamp in which the cart crashed in. So he pretends to be a Merchant in order to trick Geralt into retrieving the medicine for him.