Siege of Cristóbal (Earth-5875)

The Siege of Madrigal was a battle of the First Contact War, fought between the Covenant against the United Nations Space Command and Insurrectionists that allied with them, on the Outer colony Madrigal, on December 20th, 2528. The battle was a decisive Covenant victory, which saw the ultimate glassing of the colony.

History
Covenant forces located and attacked the Outer colony Madrigal, on December 20th, 2528, leading to immediate action of the UNSC against the invaders. They fought in the defensive, and ended receiving support and help from Madrigal's many Insurrectionist both during firefights and evacuation operations. The Insurrectionists also supplied the UNSC with their own freighters, which the UNSC Navy utilized to send the survivors out of the 23 Librae system, leaving them at an asteroid refugee camp known as the Rubble, near the gas giant Hesiod. Despite the preparation of the colony's defenses ever since the Second Battle of Shanxi, the planet proved to be unmatched for the might of the Covenant, and ended up glassed after three days of fighting. Notable participants of the siege were Edward Buck and Thel 'Vadamee.

Following disastrous losses, the UNSC abandoned the colony and the system. The colonists of Madrigal who were brought to the Rubble started to live in the settlement alongside the Insurrectionists, with both creating a civilization outside the UNSC.