Trekipedia

Eminiar VII

M-class planet with an advanced civilization that was at war with its neighbor planet, Vendikar, for more than 500 years. While on a diplomatic mission, the crew of the U.S.S. Enterprise NCC-1701 discovered that the two planets learned to avoid the complete devastation of war by using computers to simulate the outcomes of a real attack. When a “hit” was scored by one of the planets, the people declared “dead” willingly walked into antimatter chambers and were vaporized. Captain Kirk and Commander Spock eventually destroyed the computers. Kirk told the Eminiar VII council members that they made this war too easy for themselves and that they would truly experience the horrors of war if they did not learn to make peace first.^[1]

References

• ^[1]TOS-23: A Taste of Armageddon