They are always regrettable .
But : It was Stalin's decision to make Stalingrad a fortress and battlefield without evacuation of the civilians .
Their fate was not of interest for him .
Soviet artillery all the time of the battle fired to the parts of the city occupied by the Wehrmacht whithout consideration for the inhabitants still remaining there .
Also , many civilians were engaged in the fighting , willingly or not . That can be called "total war" ( as later on claimed by Goebbels ).