Hey there kiddo! Do you want to learn about something called "levée en masse"? It's a fancy French term that means "mass levy".
So, imagine you are living in a village with your family and friends. Suddenly, some bad people come and want to attack your village. Now, you and your village need to protect yourselves. This is where the "levée en masse" comes in.
It means that all the men in the village, who are able to fight, should come together and help defend their village. They should pick up weapons and fight to protect their families, friends, and property.
Now, imagine that not just your village, but your entire country is under attack. The government might then call for a "levée en masse" and ask all the men who are able to fight to come together and defend their country. This would be a very big group of people who are willing to fight for their country.
Overall, "levée en masse" means a mass call to arms, where men are summoned to defend their homes, villages or countries. It's all about people working together in times of crisis to protect what's important to them.