From Halopedia, the Halo wiki
Battle of Kroedis II
Estuary, Thompson system
United Nations Space Command
Fleetmaster Thel 'Vadamee
About 89 million casualties
In 2549, a battle took place at Estuary, a human colony in the Thompson system.
The colony was attacked by the Fleet of Particular Justice.
During the battle a Punic-class supercarrier was involved at the UNSC Navy's last stand against the Covenant.