In his memoirs, Borovets claimed that from the year 1933 he worked for the government in exile of the Ukrainian People's Republic (UNR) and carried out illegal missions on the territory of the Soviet Union.

In 1934, after the assassination of Polish interior minister Bronisław Pieracki, Borovets was arrested and sentenced to three years in the Bereza Kartuska Detention Camp.

[citation needed] After Operation Barbarossa at the beginning of July 1941 the Germans appointed him chief of the Ukrainian militia in the Sarny district.

The command of the 213th Security Division (Wehrmacht) gave him permission to form the "Polissian Sich" with a thousand men on August 8, 1941.

[3] It was highly praised by Germans for cruel massacres of retreating Soviet Army soldiers,[4][verification needed] but later was officially disbanded and forced to go into underground.

In June 1942, Borovets wrote a letter to Reichskommissar Erich Koch, accusing him of crimes and looting of Ukrainians.

The two groups could not reach an agreement, because Borovets refused to obey the Soviet command and feared retaliation from Germans against Ukrainian civilians.

According to one of the testimonies, two members of the OUN (B) with a laugh recalled that she was hanged and then "swung and dangled for a long time as her legs twisted about".

In November, left his forces, by that time a tiny demoralized group, and went to seek German assistance in Warsaw.

However, according to the internal documents of the Soviet secret service, which continued to hunt Borovets and his associates until 1969, he remained in West Germany for some time.

According to these reports, he worked in the American intelligence school and even traveled to the United States to meet with CIA director Allen Dulles in 1953.

[14] After emigrating he organized the Ukrainian National Guard and published a newspaper, Mech i Volia (Sword and Freedom), and a memoir, "Armiya bez Derzhavy" (Army without a country).

In 2014, the American historian Jared McBride criticized a plaque to Bulba-Borovets in a Tablet article titled, "Ukrainian Holocaust Perpetrators Are Being Honored in Place of Their Victims".