He was wounded in December 1942 during the Battle of Stalingrad and hospitalized for two months. Seytveliyev began to distinguish himself on 25 June 1944 in the fighting for the Gomel region of occupied Belarus. In the process of breaking through enemy defenses and repulsing counterattacks, he suppressed multiple enemy firing point as well as two tanks, all under heavy enemy fire. When his regiment was deployed to the Minsk region to attack a column of containing 40 enemy tanks, he managed to hit a total of 15 enemy tanks during the week-long battle. For his actions in Belarus he was awarded the Order of the Red Banner and nominated for the title Hero of the Soviet Union. On 25 September 1944 he was declared a Hero of the Soviet Union by decree of the Supreme Soviet, which he learned of while fighting for the town of Ostroleka in Poland. He continued to fight across Eastern Europe, reaching East Prussia in the winter of 1945, after which he reached the coast of the Baltic Sea and was demobilized in 1946.