From a European collective memory of the two World Wars to a shared citizenship and commemoration.This Erasmus project revolved around the collective memory and commemoration of the two World Wars. It was carried out over two school years with the study of the Great War in the first instance (in 2016-2017), followed by the Second world conflict (in 2017-2018).The aim of the project was to link yesterday and today, not only as far as collective memory is concerned, but also to set up an intergenerational and European commemorative practice .The objective was also to compare the French memorial posture and vision of these two founding events of our history with the ones held in the Eastern European countries, the different ways in which the Winners and the Losers view both wars, and to propose a new European and public-spirited commemorative scheme.Twenty-two students in 3èmes at our school who were studying English as a first foreign language and German or Spanish as a second foreign language took an active part in this project (two hours a week). They exchanged in English with their correspondents in secondary school and travelled to our partner countries - namely Germany (Linden), Poland (Gorlice),and Slovakia (Bardejov), and our correspondents came to Chabeuil.During their trips abroad and trips to places in their own countries, the students worked in groups and went on guided tours in English (in Verdun, Paris, Meaux, Vassieux, Dora-Mithelbaum, Berlin, Auschwitz-Birkeknau, Cracovie, Gorlice, Bardejov... ). Their work on-site enabled the emergence of shared technical and interpersonal skills: mutual reflection, consolidation of knowledge, a real cohesion of the group, and a lived experience of what it means to be a European entity. The aim was to develop our students’ competences as well as their creativity and at the same time to train them to become tolerant citizens, open-minded, open to other cultures, and aware of their past. Taking part in local commemorations in our partner countries also brought life and meaning to our project.This project revealed differences in approach to these historical events, the Germans undeniably showing restraint, and it enabled the students to discover a history of the Eastern and Western fronts.Beside the four countries involved and the classrooms, the project benefited from the involvement of high quality local partners : town councils, veteran associations, members of the resistance, as well as meetings with artists, schools, and of course the students' families.In each school, the project was given a museographic space housing objects from the period, different historical records and testimonies, and students' works. These sites whether they be Polish, German, Slovak or French, try to faifhfully transpose what was done and the trips taken in the course of this Erasmus+ project. French website : site français : https://pafs1618.wixsite.com/in-memoriam.Different indicators lead us to think that the project has achieved its main objective (that of European collective memory of the two World Wars and shared citizenship and commemoration): the students attended commemorative ceremonies together with their ancestors and the seniors, other students were involved with some veteran associations such as “Le Souvenir français”, students spread their knowledge in their families and with their friends, friendships were formed among the youth and maintained beyond school, the students' commitment to think up a new commemorative scheme which was proven by the high-quality of the closing ceremony.In the short term, the benefits deriving from this project can already be seen as it moves forward with the preparation of the ceremonies of the centenary of the Armistice of 11th November 1918, in France and in the other partner countries. In the long term, with spaces for commemmoration being permanently implanted in each country, the project will live on and constitute a proud and lasting legacy for the schools involved.