In 1918, following the First World War, the school moved to Versailles and diversified by including in its ranks officers from not just the French Army but from other armies in Europe, as well as military police forces like the Spanish Civil Guard and the Italian Carabinieri, a tradition carried on till the present[citation needed].

This was officially handed over to the superintendent, Colonel Picot, 14 July 1937, on the Champs-Élysées by the President Albert Lebrun.

Indeed, from this date, recruitment is carried out directly by competitive examination for academics holding a master's degree.

On 1 September 2008, it became the sole facility for the continuous training of Gendarmerie officers, both in the operational and support fields.

French students take exams on general knowledge, aptitude and intelligence; sit for an interview and pass a test of physical ability.