Cyberon War

You may be looking for the Cyber-Wars fought against the Cybermen.

The Cyber-War, also called the Cyberon War, was a conflict against the Cyberons. Opposing forces included humans.

Once, while aboard a Cyberon vessel, Harcourt Ross noted that one of the reasons the Cyber-War was taking long to win was because the Cyberons could convert both living and dead organisms. (PROSE: Flight of the Cyberons)

Behind the scenes

The Cyber-War against the Cyberons first appeared in the Audio Adventures in Time & Space story Cyber-Hunt, in which the Wanderer allies with a team of human soldiers on Carson's Planet and discovers a secret Cyberon facility developing nanite conversion methods, which the Wanderer tampers with so that the nanites attack Cyberons. Cyber-Hunt was adapted from an unproduced BBV Productions film called Cyber-War, which was at one point an adaptation of Sword of Orion and at another point was planned to feature Cybermen and Ice Warriors in conflict. (REF: Downtime – The Lost Years of Doctor Who)

The second Audio Adventures Cyberon story, Cybergeddon, is set 900 years after the events of Cyber-Hunt ended the Cyber-War. The story shows the return of the Cyberons in a plot involving the Vega Station.