With his unit, Chigin fought in the Border Battles on the Northwestern Front, and within two months he became a battalion commander in the regiment, fighting in the area of Pskov and Staraya Russa. Serving as assistant chief of a section of the operations department of the staff of the 27th Army from October, he was wounded in the area of Demyansk on the 28th of that month, and fought in the Toropets–Kholm Offensive from January 1942. Appointed commander of the 78th Tank Brigade of the army on 3 March 1942, he was evaluated as a "strong-willed, competent, and a fighting commander" for his performance in the Battle for Velikiye Luki, and promoted to colonel on 22 February 1943.
Transferred to command the 113th Tank Brigade of the 15th Tank Corps in April 1943, Chigin arrived to lead the brigade while it was being rebuilt in the Reserve of the Supreme High Command at Plavsk. The brigade and its corps joined the Bryansk Front on 13 July to fight in Operation Kutuzov. Chigin led the 113th in the main attack of the corps when it entered battle on 19 July near the settlement of Aleksandrovsky, Oryol Oblast. He controlled the brigade by radio from the lead tank and was killed with his crew that day when a shell hit his tank during fighting for the village of Gusevo.[4] Chigin's brigade was credited with destroying up to 40 tanks, 17 guns, and killing around 1,400 German soldiers during the fighting. For his actions, he was posthumously awarded the title Hero of the Soviet Union and the Order of Lenin on 4 June 1944. Chigin was buried in Gusevo.
He was survived by his wife, Anastasiya Mikhailovna.[5] A bust of Chigin is located in nearby Zalegoshch, where a street is named for him.
Hero of the Soviet Union citation
Comrade Chigin, commanding the brigade from 15 May 1943, managed to knit together and prepare the personnel of the brigade for future battles against the German invaders in a short period of time. In the period of the fighting from 19 July 1943, the brigade, thanks to skillful leadership from Comrade Chigin, inflicted great damage to the enemy in men and materiel, destroying up to 40 tanks, 17 guns, about 1,400 enemy soldiers and officers and many other losses. Chigin was himself courageous, brave, and decisive. On the battlefield, Chigin, courageously fighting against the arrogant Fascist enemy, died the death of the brave.
For [his] bravery and courageous leadership displayed in battle against the German invaders, Comrade Chigin [is] worthy of the award of the title Hero of the Soviet Union posthumously.[6]