Complex sentence: Kopisto took part in several spectacular military actions in Volhynia against the occupying German forces as well as their collaborationist units of UPA, such as 20 January 1943 rescue of Polish prisoners of war from "Wachlarz" of the Armia Krajowa tortured at the Pińsk prison.
Split into simpler sentences: Kopisto took part in several spectacular military actions in Volhynia against the occupying German forces as well as the collaborationist units of the UPA. On the 20 January 1943 he was involved in the rescue of Polish prisoners of war from "Wachlarz" of the Armia Krajowa who were being held and tortured at the Pińsk prison.