Local residents are coming to lay flowers at the Military Glory memorial and take part in a rally on Theatre Square.
Hitler viewed Rostov-on-Don as the third most important strategic goal after Moscow and Leningrad.
Less than half of 53,000 Rostov-on-Don residents who had been driven away managed to return back home. 40,000 were executed.
On Wednesday, Russia marks the 70th anniversary of the end of the Battle of Caucasus during World War II.
Flower-laying ceremonies will be held near Mountain Elbrus to pay tribute to Soviet soldiers who gave their lives to liberate the-then Kabardino-Balkar Autonomous Soviet Socialist Republic from Nazi troops in January 1943.
In February 1943, a Soviet flag was hoisted on Mount Elbrus’ western and eastern summits.
Voice of Russia, Vesti