Siege of New Andria (Earth-2042)

"Look at this place. Used to be the crown jewel... not anymore."

- Jun-A266

The Siege of New Andria was a major engagement between the Galactic Republic and the Confederacy of Independent Systems within Reach's capital city of New Andria that occurred from August 18 to August 23, 20 BBY. Major evacuations of civilians took place as part of Operation: SWORD 52. The raid ended with the glassing of the city. At least 5,000 civilians and soldiers were successfully evacuated out of the city; however, hundreds more were killed as they tried to escape.

Source

 * https://www.halopedia.org/Siege_of_New_Alexandria