|Born||12 September 1919|
Glinkovsky District, Smolensk Oblast, Soviet Russia
|Died||19 February 1994 (aged 74)|
Kizlyar, Republic of Dagestan, Russia
|Years of service||1939–1945|
|Unit||1st Baltic Front|
1122nd Rifle Regiment
|Battles/wars||World War II|
|Awards||Hero of the Soviet Union|
Born to a peasant family in Glinkovsky District, Smolensk Oblast, Russia, Sidorenko attended ten grades of school, and later studied at the Penza Art College at Penza, south-east of Moscow. In 1939, he dropped out of college, and was conscripted into the Red Army for training at the Simferopol Military Infantry School, in the Crimean Peninsula.
In 1941, he fought in the Battle of Moscow, as a Junior Lieutenant of a mortar company. During the battle, he spent a lot of time teaching himself to snipe. His hunts for enemy soldiers were successful, prompting Sidorenko's commanders to order him to train others, who were chosen for their eyesight, weapons knowledge, and endurance. He first taught them theory, and then slowly started taking them out on combat missions with him. The Germans soon began fielding snipers of their own in Sidorenko's area of operation, to counter the new threat posed by him and his men.
Sidorenko became assistant commander of the Headquarters of the 1122nd Rifle Regiment, fighting as part of the 1st Baltic Front. Though he mainly instructed, he occasionally fought in battles, taking one of his trainees with him. On one of these excursions, he destroyed a tank and three tractors using incendiary bullets. However, he was wounded several times, most seriously in Estonia, in 1944; as a result of which he remained hospitalized until the end of the war. While recuperating from this wound, Sidorenko was awarded the title of Hero of the Soviet Union, on June 4, 1944. Sidorenko was prohibited from seeing combat again, by his superiors, as he was a valuable sniper trainer.
By the end of the war, Sidorenko was credited with five hundred confirmed kills, and had trained over two hundred and fifty snipers. Ranked a Major, he was the most successful Soviet sniper of the Second World War, and used the Russian Mosin–Nagant rifle, equipped with a telescopic sight.