Farnsworth was killed in action at the battle of Fortin de Navarin near Tahure, France, on September 28, 1915, in the Second Battle of Champagne. He was shot in the neck and the spine by a machine gun. Sukuna, a Fijian comrade, pulled Farnsworth into a trench but was unable to save him. After watching Farnsworth die, Sukuna vowed to avenge his death, advanced towards the German line, and was shot in the leg.