In G.J. Meyer's "A World Undone" there is a passage regarding the mutinies of French troops in 1917: "Troops were crowding into Paris in a state of extreme disorder. French archives on the mutiny have been sealed since the war and will remain so until 2017, but enough is known to make clear that at its peak it was a threat to the survival of the republic."
What information will be unsealed? When this year will it be unsealed?
Maybe it's about the mutinerie d'Étaples
The two sites talk about it and mention that the archives will be unsealed only in 2017 :
ps : I give to back to Caesar what is Caesar's, I never heard about this story before reading the message of UnexplodedGoat