The Carbury Incident, also known as the battle at Carbury, (PROSE: The Universal Databank [+]Loading...["The Universal Databank (reference book)"]) was a conflict in Carbury between knights from another universe and forces of the United Nations Intelligence Taskforce.
In 1992 (PROSE: The Universal Databank [+]Loading...["The Universal Databank (reference book)"]) or 1997, Morgaine led a group of knights, including her son Mordred, from their universe to Earth in search of King Arthur. Morgaine believed Arthur had survived their last battle when in truth he had perished, with only his long-decayed remains hidden on Earth. Morgaine's forces were confronted by a UNIT convoy who had been transporting a nuclear weapon through Carbury led by Brigadier Bambera, who were aided by the Seventh Doctor and Ace. The Doctor's involvement led to Bambera requesting the aid of retired Brigadier Lethbridge-Stewart. (TV: Battlefield)
UNIT was impressed by how Bambera had handled the incident, so offered her a promotion to command UNIT-UK the following year. (AUDIO: Rogue State)