A measure available to young people from the age of 15, the Universal National Service (SNU), was tested in 13 departments in 2019, before being rolled out nationwide. Its gradual extension, originally intended to result in an extension to an entire age group by 2024, was severely disrupted by the health crisis. Every year since then, the number of participants in cohesion stays has fallen far short of the target set in the initial budget act. These difficulties reveal the absence of a clear timeframe for the measure, as well as insufficient planning of the resources needed to ramp it up. This report looks at how the measure has been implemented since 2019. At the end of its investigation, the Court notes that the conditions for implementing the measure are unsatisfactory and that its development has not been accompanied by a clarification of its objectives, which remain uncertain.