Russians captured the city Izium
In 1942 the sovjets created a bridgehead from there on the other side of the river. Nazis surrounded them there and pushed them back with better and more artillery, machine guns, and airplane bombs. Sovjets lost 280k people there versus 20k Nazis
Looks like the Russians want a replay on that same place, but now with Russian artillery and air bomb superiority
https://en.wikipedia.org/wiki/Izium
https://en.wikipedia.org/wiki/Second_Battle_of_Kharkov