Massacre of Wola Ostrowiecka was a 1943 mass murder of Polish inhabitants of the village of Wola Ostrowiecka located in the prewar gmina Huszcza in Luboml County (powiat lubomelski) of the Volhynian Voivodeship, within the Second Polish Republic. Wola Ostrowiecka no longer exists. It was burned to the ground during the Massacres of Poles in Volhynia and Eastern Galicia. The perpetrators were nationalists of the Ukrainian Insurgent Army's territorial command Piwnicz, aided by local Ukrainian peasants. On 30 August 1943, the Ukrainians surrounded the village, and began murdering the Polish inhabitants. Altogether, 79 families were murdered in their entirety, and in another 37 families, only one family member survived. Polish sociologist and researcher Tadeusz Piotrowski puts the number of murdered Poles at 529, out of total village's population of 870. On the same day, Ukrainian nationalists murdered 438 Poles in the neighboring village of Ostrowki (see Massacre of Ostrowki). Account of the massacre According to the Polish survivors, the perpetrators had been preparing the attack for a few days in advance. The Poles noticed that their Ukrainian neighbors were drinking heavily, and chanting anti-Polish slogans. On the morning of 29 August, the Ukrainians surrounded the village. At first, they acted in a friendly way, talking to children, and asking men to gather in a square in front of the school. A Ukrainian Insurgent Army officer made a speech, in which he urged Poles to fight the Germans, alongside the Ukrainians. At the same time, on the outskirts of the village, pits for dead bodies had already been dug. After the speech, all Polish men were asked to come for “physical examination” in a barn, one by one; they were killed by blows to the head with a blunt object. Once all the men had been killed, the women and children were locked in the school building. One of the survivors, a young girl named Marianna Soroka, later recounted that they began singing hymns, and their mother told them to prepare for death. Another survivor, Henryk Kloc, who was 13, stated that the Ukrainians set fire to the school, and then began firing at it and throwing grenades inside. Kloc, heavily wounded, lay among the dying in a school orchard, and watched the murderers kill the five-year-old son of Maria Jesionek. The boy's mother had already been killed, and her son was sitting next to her, asking her to go home.