This chapter deals with the history of the French poetry of the First Wold War. Although, like in other belligerent countries, the production of war poetry was massive between 1914 and 1918, it remains hitherto neglected by literature scholars and historians. The genre suffered from its bad reputation. Apart from a few avant-gardists like Guillaume Apollinaire, the scholarly consensus outlined the French war poetry as a chauvinistic old-fashioned flood of words with no literary or even documentary relevance in contrast with the prose written by soldier-writers. This chapter does not try to rehabilitate the French war poetry but to sketch a typology of a significative cultural phenomenon. It shows the variety of the genre between patriotism, eulogy, irony and humour, testimony, protest, and formal research.