It took place on 16 September 1920 between units of the 8th Polish Field Artillery Regiment from Płock and the 8th Mounted Red Cossack Division of the Red Army near the village of Dytiatyn (now in Ukraine, northwest of Halicz).

The Poles defended themselves on a grassy hill 383 m (1,257 ft) above sea level but after they ran out of ammunition they were massacred by some 3,500 Soviet mounted troops.

Among the dead was the commandant of the regiment Colonel Wladyslaw Domanski.

In the interbellum period, Polish military authorities established a cemetery and a monument to the massacred soldiers.

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