Still under repair when the Germans invaded the Soviet Union in June 1941, the ship was initially tasked to lay minefields after the repairs were completed in July. "Grozny" then began escorting Soviet convoys, but then started escorting Allied Arctic convoys transporting weapons and supplies to the Soviets which she continued to do almost to the end of the war in 1945. The ship provided naval gunfire support to Soviet troops along the Arctic coast in late 1941, but was not called upon to do so afterwards. From then on "Grozny"s primary task was convoy escort, both Soviet and Allied. The ship ran aground after an emergency refueling of one of her sisters in early 1942, but she was pulled off and repaired. In 1943 and 1944, "Grozny" participated in several unsuccessful attempts to intercept German supply ships along the Norwegian coast.