He actively participated in eliminating illiteracy among the adult population, organizing a club and a reading room.
In conditions when rural activists were killed in the volost by Stanisław Bułak-Bałachowicz's forces, Halavach worked in the most critical areas.
The troika of the NKVD convicted him as an "organizer of a terrorist group" and for "carrying out German-fascist activities" to the highest penalty with confiscation of property.
He was married to Nika Feodorovna Vechar (born in 1905 in the village of Mashchytsia, Slutsk District, Minsk Province); they raised two children.
She was arrested on November 5, 1937 in Minsk, and on November 28, 1937, she was sentenced by the NKVD as a "family member of a shot enemy of the motherland" to eight years and sent to the Karaganda concentration camp of the NKVD of the Kazakh SSR (Dalinskaya village).
His first short story "Lost Life" was published in the newspaper "Soviet Belarus" in 1925.
Many of his works remained unfinished, including a book about the uprising of 1863-1864 and Kastus Kalinowski.