1917 French Army mutinies

The 1917 French Army mutinies took place amongst French Army troops on the Western Front in northern France during World War I. They started just after the unsuccessful and costly Second Battle of the Aisne, the main action in the Nivelle Offensive in April 1917. The new French commander of the armies in France, General Robert Nivelle, had promised a decisive victory over the Germans in 48 hours; morale in French armies rose to a great height and the shock of failure soured their mood overnight.

Source: Wikipedia — 1917 French Army mutinies (CC BY-SA 4.0)