The most noted novel by Henri Barbusse (1873-1935) is the autobiographical Le Feu (1916), for which he won the Prix Goncourt, which was translated into English as Under Fire, and which tells of the time he spent on the front line of the trenches from December 1914 to 1916: he volunteered at 41 in spite of weak health, and in spite of previous pacifist declarations. Le Feu is considered as a very
significant work of war literature.
Link to my earlier post on Père-Lachaise:
Le Cimetière du Père-Lachaise / Père Lachaise Cemetery