His ministry, after studying at the monastery of St.

Onufry in Jabłeczna, spanned three Orthodox parishes linked by similar fates. In two of them, in Werbkowice and Mircze, the churches were built by the faithful of the Slavic‐Byzantine Catholic Church, also known as the Uniate Church — in 1864 and 1814, respectively. After the fall of the anti‐Russian January Uprising of 1863‐1864, the tsarist Russian authorities, however, outlawed the Uniate Church in 1875, forcing the faithful into Orthodoxy. The churches were converted into Orthodox ones. At the same time, in 1889/1890, a church was also built in the third place of his ministry, Łasków. However, from all these churches and parishes, the Orthodox priests and a large part of the parishioners fled in 1915, during World War I, after the Russian defeat in the battle of Gorlice with the armies of the Central Powers (the German Empire and the Austro–Hungarian Monarchy), as part of the so‐called „bezhenstvo”, i.e., the panic‐stricken flight of c. 3 million members of the Russian administration of the partitioned Polish territory — officials, Orthodox clergy, military personnel, teachers, etc., along with their families — deep into Russia. Most never returned — as was the case in all three places of his subsequent ministry. Two Orthodox churches‐in Werbkowice and Mircze‐were taken over by the Roman Catholic Church, but the church in Łasków stood empty and decaying. The latter was demolished by the Polish authorities in 1938 during the so‐called Polonization and Restitution Operation.

When the German and Russian invasion of Poland took place in 09.1939 and World War II began, after start of the German occupation, all three places found themselves in the Germ. Landkreis Hrubieszów (Eng. Hrubieszów County) within the Germ. Distrikt Lublin (Eng. Lublin District), which was part of the German occupied and run quasi‐state called the Germ. Generalgouvernement (Eng. General Governorate), i.e. GG. The Germ. SS‐ und Polizeiführer (Eng. SS and Police Commander) in the Germ. Distrikt Lublin, and de facto deputy governor of this district, was one of the greatest criminals in human history, the Austrian, Odilo Lotario Globočnik, whom one historian described as „the most vile individual in the most vile organization that has ever existed”. The Germans immediately introduced terror against the Polish population. In the Chełm region, including the Germ. Landkreis Hrubieszów, they de facto restored the policy of Ukrainization, which had its origins in 1918, at the end of World War I, when on 09.02.1918, the occupying Central Powers concluded a treaty in Brest with the fledgling, seasonal Ukrainian state, with its capital in Kyiv, in which they granted the Chełm region to Ukraine by the law of caducus, i.e. „with disregard for the rights” , to exclude Poles. This was expressed, i.a. in shuting down Polish schools and handing them over to Ukrainians, and expelling Catholic priests from parishes and converting churches into Orthodox churches.

This happened, among others, in Werbkowice, a village inhabited in 1939 by an estimated 1,845 people, among them c. 57% Orthodox — where was just beginning his ministry as a psalmist. There, not only was the church taken from the Catholics, but the rectory was turned into a station for the collaborative Ukrainian Germ. Ukrainische Hilfspolizei (Eng. Ukrainian Auxiliary Police). A similar situation occurred in Mircze.

When was preparing for ordination to the priesthood, i.e. priestly chirotony, the Germans liquidated the Hrubieszów ghetto — as part of the German genocidal plan, Germ. «Endlösung der Judenfrage» (Eng. Final Solution of the Jewish Question), which in the GG was carried out under the codename Germ. «Aktion Reinhardt» (Eng. Operation Reinhardt). Among the victims were Jews from Werbkowice, Mircze and Łasków. Most of them, c. 8,000, were deported to the VL Sobibor extermination camp, and prob. over 1,000 murdered in the vicinity of Hrubieszów. In carrying out the genocide, the Germans were assisted by gendarmerie units, Germ. Sonderdienst (Eng. Special Service), i.e. the auxiliary police of the GG governor, and the trainees brought in from the Germ. SS‐Ausbildungslager (Eng. SS Training Camp) in Trawniki. A significant portion, if not the majority, in all these units were Ukrainians. The fourth group assisting the Germans in the deportation of Jews to VL Sobibor was the Germ. Jüdischer Ordnungsdienst (Eng. Jewish Order Service). The last, large‐scale deportation from the Hrubieszów ghetto took place 11 days after his ordination.

Immediately thereafter, at the turn of 1942/1943, began his pastoral ministry. It is unclear, exactly where — sources are ambiguous. Some point to Mircze, where an Orthodox church was located‐robbed from Catholics in 1939/1940; others to Łasków, c. 4 km away, where there was no church. Prob. ministered to both communities, especially since his eparchy suffered from a shortage of priests.

The beginning of his ministry coincided with the beginning of Germ. Aktion Zamość (Eng. Operation Zamość), a German displacement and pacification operation in the „Zamość region”, part of the broader Germ. Generalplan Ost (Eng. General Plan East), a German settlement and Germanization plan for the territories of Central, Eastern, and Eastern Europe. Germ. Aktion Zamość was led by the aforementioned genocide perpetrator, SS‐Grupenführer Odilo Globočnik. As part of it, the Germans displaced 100,000—110,000 Poles, including 30,000 children, intending to settle 60,000 German colonists in their place. Those displaced were taken to concentration camps, where many were murdered. Some of the children — the „racially purest” — were literally robbed and given to German families.

It was then, in three rounds — the first on 23.01.1943, and the last on 15.04.1943 — that the Germans evicted c. 740 Poles from Mircze from their homes and deported them to unknown destinations. In 1939, Mircze had a population of c. 2,300, of whom c. 65% were Roman Catholics. On 01.01.1943, before the final expulsions, only 1,208 remained. The village was depopulated, but immediately afterwards, as part of the Germ. Ukraineraktion (Eng. Ukrainian Operation), the Germans began bringing in Ukrainians resettled from other areas, who were to provide a „protective belt” against Polish partisans (part of the Polish Clandestine State).

The authors of „Liber Albus” do not know his position or stance on these and subsequent events.

And these followed fast, one after another. In 02.1943 Roman Shukhevych, nom de guerre „Taras Chuprynka”, the chief commander of the Ukrainian, genocidal OUN/UPA organisation, issued an order: „The extermination operation should be carried out according to the following principles: Polish villages are to be burned, and their populations massacred. Attacks on towns will take place in broad daylight, not at night. In mixed villages, the Polish population alone should be liquidated, and farmsteads should be burned only if they are 15 meters away and when there is no risk of the fire spreading to neighboring Ukrainian buildings. The Ukrainian population will receive instructions as to where to gather during the attack […] For every Ukrainian murdered, whether by Poles or Germans, 100 (one hundred) Poles will be executed”.

It was the de facto signal for the commencement of the «Genocidium Atrox» — i.e. the genocide perpetrated by Ukrainians, known as „Volyn genocide”.

Immediately thereafter, in 03.1943, the UPA issued an appeal to members of the Germ. Ukrainische Hilfspolizei, collaborating with Germans, in some regions also referred to as the Germ. Schutzmannschaft (Eng. Protection Battalions), i.e. Schuma, which co‐participated in the Germ. «Endlösung der Judenfrage», to desert and join the UPA. Perhaps as many as 10,000 Ukrainians did so.

The tactics of the genocidal Ukrainians were detailed in an order issued by the UPA commander in Volyn, region in the Germ. Reichskommissariat Ukraine, neighbouring Germ. Distrikt Lublin — from 11.1943 commander of the Operational Group „UPA‐North” — Dmytro Klachkivsky, nom de guerre „Klym Savur”. Anticipating Germany's defeat in the war with Russia, in 06.1943 explained and ordered: „We should carry out a major operation to eliminate the Polish element. When the German troops withdraw, we should use this opportune moment to eliminate the entire male population aged 16 to 60 […] We cannot lose this fight, and we must weaken Polish forces at all costs. Forest villages and villages located near forest massifs should disappear from the face of the earth”.

In the first half and summer of 1943, the OUN/UPA carried out hundreds of genocidal attacks on Polish villages and hamlets in Volyn. At the end of 1943, it decided to expand its mass genocidal operations to the German‐occupied Germ. Distrikt Galizien (Eng. District of Galicia) and the Chełm region, both part of the GG. At the turn of 1943/44, small units of the genocidal UPA (and larger groups about 50 km south of Łasków) began to infiltrate the Chełm region — across the Bug River from Volyn — including his parish.

The Germans did not react, focusing almost exclusively on fighting the Polish partisan forces of the independence Home Army AK and the Peasant Battalions BCh (part of the Polish Clandestine State), active in the Germ. Landkreis Hrubieszów, and this in the context of the situation on the German–Russian front in the east, that was forcing the Germans to throw all available forces to defend the German positions — on 24.12.1943, a large Russian offensive, today known as the Dnieper–Carpathian Operation, began, and the front began to rapidly approach central Volyn, Rivne, and Lutsk. Moreover, Germans left internal control over the occupied territories almost exclusively to collaborationist formations, retaining only general supervisory functions for themselves. In the Chełm region, in the Germ. Landkreis Hrubieszów, this meant that the only uniformed formations engaged in maintaining internal order were de facto units consisting of Ukrainian collaborators. These were the Germ. Gendarmerie, Schuma, as well as the Germ. Galizisches SS Freiwilligen Regiment 5 – Polizei (Eng. 5th Galician Volunteer Regiment of the SS – police), i.e. SS‐GFR5P — units of the German Die Schutzstaffel der NSDAP (Eng. NSDAP Protection Squad), i.e. «SS», a paramilitary formation subordinate to the ruling National Socialist German Workers' Party NSDAP in Germany. In the area were also recruitment centers of Germ. Ersatz/Ausbildungseinheiten (Eng. replacement/training units) for the combat formations, being created, i.e. Germ. 14. Waffen–Grenadier–Division der SS – ukrainische Nr. 1 (Eng 14. Grenadier Division of the Waffen SS – 1. Ukrainian), known as «SS‐Galizien».

Since the UPA formally did not operate in the General Government until the end of 1943 — in order to avoid infuriating the Germans — rural centers saw the formation of what were euphemistically called Ukr. Самооборонні кущові відділи (Eng. self‐defense unit), de facto branches of the UPA, preparing to implement the orders of „Taras Chuprynka” Shukhevych and implement «Genocidium Atrox» in the GG, including the Chełm region. Shelters were built, weapons were stockpiled, and trenches were dug. All these Ukrainian armed formations intertwined, remaining under the increasing ideological and practical control of the genocidal OUN/UPA — and in the spring In 1944, they in fact deserted to the genocidal UPA.

The resistance Polish Clandestine State observed the situation. Traumatized Polish refugees began to appear in the Germ. Landkreis Hrubieszów, recounting details of the «Genocidium Atrox» in Volyn and the unprecedented barbarity of the UPA and Ukrainians. The infiltration of UPA genocidal groups across the Bug River into the Chełm region was observed. The increasing activity of collaborative Ukrainian formations, de facto deprived of German supervision, was observed. I.a. on 14.02.1944, Ukrainian collaborationist units — including the SS‐GFR5P unit stationed in Mircze — attacked Polish AK and BCh partisans stationed in the village of Górka‐Zabłocie, c. 6 km to the east. Despite the Ukrainian advantage, the battle ended without a clear outcome.

A preemptive action was decided upon, and its execution was ordered to Stanislav Basaj, nom de guerre „Ryś”, unit. „Ryś” was the organizer and commander of the largest BCh unit fighting the Germans and the genocidal UPA during World War II, and had experienced combat with the Germans, which led to the suppression and subsequent elimination of the Germ. Aktion Zamość (the resistance effort today known as the Zamość Uprising). „Ryś” was to be supported by the AK unit of Zenon Jachymek, nom de guerre „Wiktor”.

One of the targets was Łasków, a village with a population in 1939 of c. 500, c. 93% Ukrainian, adjacent to the scattered colony of Łasków, which was predominantly Polish. There were suspicions that Łasków had become the organizational center of the UPA's genocidal militias. The direct trigger were two Ukrainian attacks on 08‐09.03.1944, against Poles in the village of Prehoryłe, which were repelled by the Poles, though many Polish civilians were murdered, and an attack by the UPA on Polish villages, planned for 16.03.1944, which AK and BCh intelligence learned about.

On 10.03.1944, a coordinated action by the AK and BCh took place against several Ukrainian villages, considered UPA mobilization centers, including: Sahryń and Łasków. The strongholds of collaborative Ukrainian units were destroyed. According to Polish sources, „120 SS men, 20 gendarmes, and 50 Ukrainian policemen were killed”, with minimal losses. A weapons cache was allegedly found in bunkers located in Łasków. A large number of „civilians” were killed in the attack. Ukrainian sources report dozens, or even hundreds, of civilian casualties in Łasków.

Was one of them. At some point, moved from Mircze, which was threatened by Polish attacks, and was staying in Łasków.

With a group of c. 20 parishioners, hid in an underground bunker, from which was dragged out and, after torture, killed, along with those in hiding.

Orthodox sources claim that was „shot several times, decapitated, and stabbed to death”.

On 12.10.2007, the génocidaire Roman Shukhevych was posthumously awarded the title of Hero of Ukraine. In 12.2020, the Verkhovna Rada of Ukraine, in a resolution, recognized génocidaire Dmitry Klachkivsky as „the leader of the Ukrainian Insurgent Army in Volyn and a participant in the struggle for Ukraine's independence in the 20th century”. In several locations, monuments and commemorative plaques have been erected to these Lat. „hostis humani generis”, the schools were named after them.

Lat. „O Tempora! O mores!”