Final answer:
During the French Revolution, French soldiers wore gray and stiff jackets for practical reasons. The gray color provided camouflage in battles, while the stiffness came from heavy wool fabric for protection.
Step-by-step explanation:
The gray and stiff jackets worn by French soldiers had historical significance. During the French Revolution, the French army transitioned from bright blue uniforms to gray ones in response to practical reasons. Gray color helped soldiers blend into the background during battles, providing camouflage. The stiffness of the jackets was due to the use of heavy wool fabric, which provided protection against weather and minor injuries on the battlefield.
Learn more about French soldiers' gray and stiff jackets