Factual error: Thomas holds the Gendarmerie rank of Capitaine (by which he is frequently addressed by his subordinates), and thus should wear three horizontal silver bars on his epaulettes. However, in the only scene where his rank is displayed he instead wears the two chevrons of an ordinary gendarme.
Factual error: On the missing poster in the hospital, one of the gendarmes is said to hold the rank of Brigadier. This is a Police Nationale rank equivalent to sergeant; it is not used by the Gendarmerie Nationale, since all ordinary gendarmes are equivalent in rank to sergeant. The lowest supervisory rank in the Gendarmerie is Maréchal de Logis-Chef (staff sergeant).