This battle took place on the planet of Randon in 3,962 BBY as part of the Mandalorian Wars, a conflict between the Galactic Republic and Mandalorian Neo-Crusaders. The battle took place because the Mandalorians campaigned to take control of the Core World of Duro. Called "Mandalorian Triumph," this charge was two pronged, with one advance that was ultimately successful and another that began at the Hutt Space world of Boonta, continued through the planet of Charros IV, but was halted at Randon when the Republic was able to defend that planet.
Behind the scenes
The Battle of Randon is only referenced once in The Essential Atlas. The battle was marked on the galactic map showing the battles of the Mandalorian Wars rather than in prose.