After Russia's entry into World War II, Lidin worked as a war reporter for the Russian daily "Izvestia" between 1941 and 1942, documenting the first year of the German invasion in a collection of essays published under the name "Winter of 1941". During this time he also wrote an essay titled "Talnoe", about the extermination of Jews by the Nazi Army in the Ukraine, that was included in "," a collection of testimonies and first-hand accounts of the perpetuation of the Holocaust, which was used as evidence during the Nuremberg Trials, but was never published in the Soviet Union.