The Battle of Atollon, also known as the attack on Atollon, broke out in the year 2 BBY between the Alliance to Restore the Republic with the Galactic Empire and the Force-sensitive being known as Bendu on and above the planet Atollon during the early rebellion against the Galactic Empire. It started when Grand Admiral Thrawn discovered the location of Chopper Base, the headquarters of the Phoenix Squadron. Thrawn's fleet blockaded Atollon, trapping both Phoenix Squadron and General Jan Dodonna's Massassi Group. Thrawn's fleet inflicted heavy casualties on the two rebel forces. However, Commander Jun Sato's decision to ram Admiral Kassius Konstantine's Interdictor cruiser allowed the rebels Ezra Bridger and Chopper to escape and seek help.