In August 1853, he was fighting again in Chechnya, when the death of his brother, David, Prince of Mingrelia, compelled Konstantin Dadiani to return to Mingrelia to become part of the regency council for his underage nephew Niko presided by David's widow Princess Ekaterina.

He assumed command of a Mingrelian militia and engaged the superior Ottoman forces at Koki and Kokati on 25 October 1854.

With the Ottoman advance, the Russian regular troops retreated from Mingrelia and parts of Mingrelian militia deserted their ranks.

Dadiani, with a remaining force, moved to the highlands to protect the family of his late brother.

[1] During a peasant revolt in Mingrelia in 1857, Konstantin Dadiani and his brother, Grigory, were recalled to Tiflis, while Ekaterina was summoned to St. Petersburg.