On 01.10.1912, drafted as a chaplain into the Austro–Hungarian Imperial Army. Initially — till c. 1914, i.e. until the outbreak of World War I — served in the city of Banja Luka in Bosnia–Herzegovina (until 1908 formally part of the Turkish Ottoman Empire, in 1908 annexed by Austria–Hungary).

In the Austro–Hungarian Imperial Army also served during World War I. Details are however not clear. May have been a chaplain in one of the units fighting in the Serbian campaign of 1914‐1915. This campaign ended after Bulgaria joined the Central Powers (Germany and Austria–Hungary), bringing shocking losses to both sides of the conflict. It hit the Serbs the hardest — losses are estimated at c. 1,000,000 inhabitants of this country, 27% of the population, including 57% of the male population — not only as a result of military operations, but also epidemics and famine. When the campaign ended on c. 24.11.1915, the Italian–Austro–Hungarian war was already underway. Italy declared war on Austria–Hungary on 23.05.1915. For first two years bloody battles ensued in the area of the Soča River (It. Isonzo) in present‐day Slovenia (12 battles), in 1918 along the Piave River in Italy (2 battles). It is known that was a chaplain of the Germ. Kaiserlich und Königlich 50. InfanterieDivision (Eng. Imperial‐Royal 50th Infantry Division) ID50. The ID50 units took part in the fights with the Italians basically from the very beginning. It is also known that was wounded on 17.08, although it is not clear which year ‐ if in 1918, it would have been after the 2nd Battle of the Piave, the unsuccessful Austro–Hungarian offensive, which is considered the beginning of the end of the Empire. After its end on 23.06.1918, positional fighting continued. Polish units took part in them ‐ withdrawn from the Eastern Front, after the last Russian offensive of Kerensky 01‐19.07.1917 and the Bolshevik putsch in Russia in 11.1917 — mainly as support units. And prob. together with them, after the defeat of the Central Powers, returned to the territory of Poland.

At the turn of 10‐11.1918 prob. was in Jarosław — still in the Austro–Hungarian Crown Land Germ. Königreich Galizien und Lodomerien (Eng. Kingdom of Galicia and Lodomeria) — perhaps in a military hospital. The Austro–Hungarian Empire was however falling apart. All over Galicia, cities adopted resolutions announcing will to join Polish Republic, which had not even been established yet — such was the case in Lviv, for example. Polish military units either became independent or recognized the authority of the Polish army established by the Regency Council in Warsaw, whose de jure authority, however, covered only the area of the Germ. Königreich Polen (Eng. Kingdom of Poland), an entity created by the Central Powers. On 01.11.1918, became the chaplain of such a unit, which, after the signing on 11.11.1918, in a staff wagon in Compiègne, in the headquarters of Marshal Ferdinand Foch of France, of the armistice and ceasefire by the Allies and the Germans — which de facto meant the end of World War I; and after the Regency Council transferred supreme authority over the army to Brigadier Józef Piłsudski on the same 11.11.1918 and appointed him Commander‐in‐Chief of the Polish forces, which de facto meant the rebirth of the Polish state; became part of the Polish Army. On the same 1.11.1918, the Ukrainians unexpectedly attacked Lviv and occupied a large part of its administrative buildings. The Polish–Ukrainian War of 1918‐1919 began. Took part in it, prob. as a chaplain of a unit from Jarosław, taking part in the battles to keep Lviv in Polish hands. May have been a chaplain at the Supreme Command of the Polish Army in Eastern Galicia, commonly known as the „East” Army. On 29.05.1919, in view of the de facto victory in the war with the Ukrainians, a reorganization was carried out and the command of the Galician–Volhynian Front was established, which was created, among other things, from the transformation of the „East” Army. After the final expulsion of the Ukrainian troops beyond the Zbruch River on 16.07.1919, for operational reasons the Front was divided and on 27.07.1919 the Galician Front was established — from 02.01.1920, called the Podolian Front.

In 11.1919, became a chaplain at its command (its dean). In view of the signs of the concentration of Russian troops in Podolia — the Polish–Russian War of 1919—1921 was already underway — it was decided to shift the front to the east, between Proskuriv and Vinnytsia, among others.

on the line Stara Synyava–Novokostyantyniv–Letychiv–Derazhnia, where the defense was to be based on the marshy Volk and Boh rivers. On 18.02.1919 the line was reached by the 5th Infantry Division. Visited it then, during the fights of 23‐24.02.1920 to hold the bridgeheads, „amidst the fire of machine guns and cannons […] By example and with words encouraged and sustained the spirit of the fighting soldiers”. After another reorganization on 01.04.1920 became a chaplain at the command of the 6th Army, created from the transformation of the Podolian Front. The army took part in the pre‐emptive Kiev expedition started on 25.04.1920. When the Russian counterattack began on 26.05.1920 it took part — in the continuous struggle with the Rus. Первая Конная армия (Eng. 1st Horse Army) under the command of Semyon Budyonny — in retreat from Kiev. When on 06.08.1920, in preparation for the decisive battle with the Russians, another reorganization of the Polish Army took place, became chaplain of the Southern Front, the core of which was the 6th Army. The troops of the Southern Front prevented the Russians from taking Lviv and delayed an attempt to support the main direction of the Russian attack on Poland, thus contributing to the Polish triumph in the Battle of Warsaw around 15.08.1920 (known as the „Miracle on the Vistula”). After the Battle of Komarów on 31.08.1920, the largest cavalry battle of the war, the Southern Front moved to counter‐offensive, pushing the Russians out of Eastern Galicia.

After the Southern Front was disbanded on 01.09.1920 and its command was moved back to the 6th Army, continued to serve as a chaplain there.

Remained a military chaplain after the end of the Polish–Russian War.

From 1921, continued to minister as a dean, within the Field Ordinariate of the Polish Army.

On c. 14.09.1925 went, as was his custom, to annual celebrations in Obroszyn village, 14 km from Lviv, where a palace, which was the summer residence of the Lviv archbishops, and the Exaltation of the Holy Cross church were located. On return, stopped in Lviv, where decided to spend the night in the Carmelites' monastery.

There, at night, was murdered by a Carmelite novice (four years in the order), Bro Adam Joseph Kopacz — previously a priest of the Przemyśl diocese, removed from parish priest duties due to insanity, and then a patient of the head of the Department of Neurology and Psychiatry of the Jagiellonian University in Kraków, Dr John Vladislav Piltz.

The assailant used an ax — horribly chopped up the victim's upper body, split the skull, chopped off two fingers…