Okay kiddo, so a long time ago there was a really important man called the Pope. He was in charge of the Catholic Church and lived in a really big fancy place called the Vatican in Italy.
Now, the Pope needed some helpers to protect him and his home, and that's where the Papal Zouaves come in. They were a group of soldiers who wore super cool uniforms with bright red jackets and big hats with feathers.
The Papal Zouaves were made up of men from all over the world who were really dedicated to helping the Pope. They would guard the Vatican and go on missions to protect Catholic people and places all over the world.
They were really brave and did a lot of things to help the Pope and the Catholic Church. Even though they're not around anymore, people still talk about the Papal Zouaves and how important they were in history.