Chernopeev worked as sergeant in
Bulgarian Army from 1889 to 1899. Afterwards he became an active member of the Macedonian liberation movement and took part in the
Miss Stone Affair in 1901 in
Pirin Mountain. After the suppression of the
Ilinden-Preobrazhenie Uprising in 1903 together with
Yane Sandanski and
Dimo Hadjidimov, he set the base of the left wing of
IMRO. During this period he led a band in
Kilkis' region and worked as a military instructor in IMRO. After the
Young Turks revolution in 1908, Chernopeev was one of the founders of the ''
People's Federative Party (Bulgarian Section)''. From 1911, he became member of the Central Committee of IMRO. During 1912, he was the leader of a volunteer regiment in the
First Balkan War. In 1913, Chernopeev was elected as deputy in the
Bulgarian parliament. During the
First World War in 1915, he left the parliament and went at the front as a reserve officer. Chernopeev was killed on 6 November 1915 in the
battle of Krivolak with French troops. He was buried in the courtyard of the church in Novo Selo, now a quarter of
Štip. After the communists seized power in
Yugoslavia in 1945, the nameplate on his grave was destroyed. In November 2010 his mortal remains and the remains of ten other Bulgarian officers were еxhumed for unknown circumstances. Later, the authorities in North Macedonia obliterated the graves and a playground was built in their place. ==Legacy==