Yavin triumph ceremony

A triumph ceremony in honor of the Wookiee hero Chewbacca was held on his homeworld of Kashyyyk in 0 BBY. It was organized by the Rebel Alliance with the intention of recognizing Chewbacca's influential role in their decisive victory against the Galactic Empire.

History
In 0 BBY, following the destruction of the first Death Star, a ceremony in honor of the heroes of Yavin was held at the Great Temple on Yavin 4. The heroes of the day were awarded the Medal of Bravery, the highest military honor the Rebel Alliance gave. Although he did receive his own medal after the official ceremony, the Wookiee Chewbacca didn't place any meaning in it, as all Wookiees did not care for tangible awards. In order to officially recognize Chewbacca's contribution to the victory at Yavin, a large delegation of Alliance officers were sent to the Wookiee homeworld of Kashyyyk, where a huge celebration was held. Fellow heroes Luke Skywalker, Leia Organa and Han Solo all attended to this event, which brought honor to Chewbacca and his entire race.

Behind the scenes
This celebation on Kasshyyyk was mentioned in a 1977 interview, in which Star Wars creator George Lucas explained why Chewbacca did not receive his own medal at the end of Star Wars Episode IV: A New Hope.