Booths on Eminiar VII and Vendikar into which citizens declared casualties of a computer-simulated war walked voluntarily to be killed, sparing their cities physical destruction.
Disintegration stations feature in the episode A Taste of Armageddon. Eminiar VII and its neighbour Vendikar have been at war for five centuries, but attacks are calculated by linked computers rather than launched. People listed as dead have one day to report to a station.
The system preserves buildings and culture and has allowed the war to go on indefinitely. When the Enterprise in orbit is declared destroyed in a simulated strike, the Eminian leader Anan 7 expects its entire crew to beam down and die.
Kirk refuses. He and Spock destroy a station with captured weapons and Kirk then wrecks the war computers, which breaks the agreement with Vendikar and leaves both worlds facing real bombardment unless they negotiate.