	During the East Prussian Offensive in early 1945, the division fought as part of 65th Army's 18th Rifle Corps. Around this time, Grebennik's son Vladimir joined the division as a lieutenant in the medical battalion. On 30 March, Grebennik took over command of the 37th Guards Rifle Division from acting commander Colonel Nikolai Onoprienko after Major General Sobir Rakhimov was killed during the assault on Danzig. Grebennik led the division through the rest of the East Pomeranian Offensive. He organized the division's crossing of the Oder on 20 April and established a bridgehead over the river during the Berlin Offensive. The division captured Kołbaskowo, southwest of Szczecin. By 2 May, the division had advanced 150 kilometers and was on the Baltic Sea northeast of Rostock. Grebennik was awarded the title Hero of the Soviet Union and the Order of Lenin on 29 May for his actions during the Berlin Offensive.