Who is Ernst Neubach from The Forgotten Soldier and what is their importance?

Ernst Neubach is a driver. He and Sajer strike up a friendship during a supply mission. During their friendship, Sajer's other regular companions are on another duty. Like Sajer, Neubach speaks French and the two men share many interests. While Neubach drives, Sajer provides security. Neubach is from Berlin, and he is married; both of his parents are still alive. One day the transportation column in which Neubach is driving is strafed by aircraft. Sajer jumps from the truck and escapes injury but Neubach is too slow. He receives aircraft fire through the lower jaw and face. His injury is mortal. Sajer buries Neubach's body, and he later visits Neubach's parents in Berlin. Sajer spends most of his two weeks' leave visiting the Neubach family and their neighbor, Paula.