The Battle of Cheron was a major battle fought at Cheron between Earth forces and the ch'Rihan in the mirror universe in 2160.

A fortnight after the battle began, ch'Havran was utterly destroyed. The War itself, however, continued and was still ongoing when the United Empire of Planets (and possibly Starfleet) was incorporated in 2161. The battle ended in victory for Earth forces in 2162 and saw all of ch'Rihan's inhabitants commit mass suicide (TNG novel: Dark Mirror)