Following the
German invasion of the Soviet Union on 22 June 1941, Petrov's corps fought in the
Battle of Białystok–Minsk. The corps was initially stationed in the rear but was moved forward to
Baranovichi to stop the German advance, after the initial German breakthrough. On 26 June it fought defensive battles around Baranovichi,
Stowbtsy, and
Minsk, The 50th Army defended the Bryansk and
Kaluga approaches, and conducted unsuccessful counterattacks against a German bridgehead on the
Desna River. The army's sector was relatively calm during September and around this time the 50th Army headquarters was visited by journalist
Vasily Grossman. In early October, the army was surrounded during the Orel-Bryansk Defensive Operation, in an area known as the Bryansk Pocket. On 7 October, while trapped in the pocket with his troops, Petrov became commander of the Bryansk Front after front commander
Andrey Yeryomenko was mistakenly reported killed.
Death There are differing accounts of Petrov's death. According to Aleksander Maslov, he was seriously wounded attempting to break out of the pocket and died on 10 October 1941.
John Erickson states that he was wounded during the breakout and was hidden by his soldiers in a woodcutter's hut near
Karachev, where he died of gangrene on 13 October. In 1956, Petrov's son, Alexander Petrov, investigated the circumstances of his death. Alexander concluded that his father had been shot through both hips during the breakout, taken to the village of Golynka and hidden in the house of the Novokreshchenovy family. By this time Petrov was suffering from
gangrene and could not be moved. Novokreshchenov's wife reportedly threw an old coat over him when German troops searched the house, claiming he was her husband. Another group of Soviet soldiers moved him to an isolated cabin. As the gangrene worsened, the soldiers and civilians decided to take him to Karachev for treatment. He rejected the idea and reportedly died ten days later. Petrov was buried near the Golynka village in the
Karachevsky District. In 1956, he was reburied in the Bryansk cemetery. == Notes and citations ==