19th of November, 1942. 7:30 a.m.
The air over Stalingrad started shaking. Volleys of thousands of artillery shells marked the beginning of the "Uranus" operation - a counter-offensive one, which became a radical turn in the Second World War.
Seventy years have passed and last Sunday there was held a reconstruction in Volgograd devoted to that battle.
Six hours remain before the start.