Endor is a forest moon that features heavily in Star Wars Episode VI: The Return of the Jedi.  It serves as the backdrop for the Battle of Endor and also features the moon’s inhabitants, the Ewoks who aid the Rebel Alliance in the aforementioned battle.

 

Endor, also known as the Sanctuary Moon was the location of the Shield Generator that needed to be destroyed in order for the attack on the second Death Star to take place.

 

This illustration shows an All Terrain Scout Transport (AT-ST) getting ready to blast the doors of the shield generator.