Four funny boys wearing kepis of Gendarmerie Nationale (France). One may identify three consecutive officer's ranks: left, Chef d'escadron (commandant); capitaine; other capitaine of Gendarmerie Départementale; and right, first lieutenant of Gendarmerie Mobile.
<a href="//commons.wikimedia.org/wiki/User:Jebulon" title="User:Jebulon">Jebulon</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>