While some of them flirt with the limits, others are dropouts or in school reintegration, they are seventeen students to follow the Defense Class at the Japy vocational school in Lyon. An option of two hours per week provided by the military to these high school students in great difficulty. School and army, a rapprochement that may seem unlikely. In a society in loss of bearings, this course can allow these young people in lack of belonging to redefine "doing Nation". What values can the army instil in them? What will be the real scope?