In the village of Jasiel, poviat Sanok, 89 Border Patrol Guards WOP soldiers and 5 militiamen from Komańcza died as a result of the UPA attack or were murdered after the surrendering, and in the village the UPA murdered 2 Polish families of 8 people (102 Poles in total). During the evacuation of the endangered WOP facility in Jasiel (Beskid Niski) there was an attack by 'Chrina', 'Didyka' and 'Myron' (according to G. Motyka) UPA sotnyas — others also mention 'Bira' sotnya. According to the archives of WOP, 108 WOP soldiers and 5 militiamen from Komańcza defended themselves in Jasiel, against over 500 Banderites. At least two soldiers died (according to Paweł Sudnik's account), 2 escaped, one to Czechoslovakia, the other to Komańcza. So 104 WOP soldiers (including 11 wounded) and 5 militiamen were captured.
On March 21, the commander of the watchtower, Major Władysław Papierzyński was murdered. „The Ukrainians chained one of his legs to a fir branch and the other to the horse's harness. The body was torn apart in the air”. His wife tried to find out from the military authorities about her husband's fate — unsuccessfully, but learned the truth only in 1975, from the book by Teofil Bielecki and Jan Ławski, „When Silence Fell after the Last Shots”, published in 1969.
Then the prisoners were led to Wisłok Wielki, leaving 11 wounded soldiers in Jasiel, after robbing them of their uniforms. On the night of March 20–21, 5 officers and 5 policemen were interrogated using brutal torture combined with mutilation. In the morning they were led up Berdo Hill and shot to the back of the head. On that and the next day, according to the prepared list, 31 more non–commissioned officers and soldiers were shot, whose bodies were later (i.e. on June 18, 1946) found thanks to private Paweł Sudnik, who was the only one who managed to escape from the place of execution and later find it.
On March 22, 5 prisoners were brought to Karlików and released. The rest were probably shot in the forest near Wisłok Górny, their grave has not been found, but in truth it was really not looked for. Of the 113 victims (108 soldiers and 5 militiamen), a total of 19 soldiers survived (2 escaped during the fight, 11 were left wounded, 5 were freed and Paweł Sudnik). If, according to Ukrainian sources, were we to assume that 24 soldiers were killed in combat, it would appear that the UPA murdered 70 Polish captured prisoners.
In June 1946, a specially designated commission went with the priv. Sudnik to the area of Wisłok, where it a mass grave was found, with 36 bodies, clad only in underwear, with arms and legs tied. There should however be 41 bodies (5 officers, 5 militiamen and 31 soldiers). Meanwhile, in A. Bata's book „Bieszczady. The trail of the battles with the UPA bands” is a photocopy of the document „Description of the accident” of November 28, 1946. The Provincial Commander of the militia police MO in Rzeszów, Lt. Col. Orłowski, writes, inter alia: „On June 18, 1946, the grave of 60 murdered soldiers was found, among whom were the bodies of those who disappeared on March 26. 46 militiamen of the M.O. Komańcza”. He names five policemen by name and surname.
The investigation into this matter was initiated by the District Commission for the Prosecution of Crimes against the Polish Nation in Rzeszów only on April 27, 2015. At that time, the command of the Polish Army, mostly Soviet, concealed the losses incurred in the battles with the UPA, and for the next 70 years, state scientific institutions avoided this topic. This also applies, inter alia, to the crushing defeat that suffered in the second half of March 1947 in the vicinity of the village of Smolnik, by the 34 Infantry Regiment of the 8 Infantry Division from Baligród.

source: Żurek Stanisław, „Calendar of the genocide – March 1946”; in: portal: Volhynia — web page: wolyn.org [accessible: 2021.06.10]

source: Motyka Grzegorz, „So it was in Bieszczady. Polish-Ukrainian battles in 1943-1948.”, in: Volumen Publishing House, Warsaw 1999, Warsaw 1999

source: Rajchel Jan, „Difficult days of Jasiel”; in: „Gazeta Bieszczadzka”, in: no. 25, 10/12/2015

source: Bata Artur, „Bieszczady. On the trail of battles with UPA bands.”; in: National Publishing Agency, in: 1984