Okay kiddo, let me explain the Italian Legione Redenta to you in a way you'll understand.
A long time ago, Italy wanted to expand its territory because it thought that would make it stronger. But there was a problem: many other people and countries also lived in the places that Italy wanted to take over, like Ethiopia and Libya.
So, Italy sent soldiers to these places to try and take over the land. One of these soldiers was named Giuseppe Garibaldi. He led a group of soldiers called the Italian Legione Redenta, which means the Redeemed Legion in English.
The name "redeemed" means that they wanted to take back land that they believed should belong to Italy. But some people thought what Italy was doing was wrong because they were taking over other people's land without asking for permission.
Giuseppe Garibaldi and his men fought hard in Ethiopia, and they managed to capture and control it for a little while. But, eventually, other countries and their soldiers came to help defend Ethiopia, and they were too strong for Italy to fight against. The Italian soldiers had to leave, and Ethiopia remained its own country, not controlled by Italy.
So, the Italian Legione Redenta was a group of soldiers who fought for Italy to expand its territory, but some people did not like what they were doing because they were trying to take over land that did not belong to them. In the end, they were not successful, and Ethiopia remained an independent country.