This is russian propaganda and fake, don't believe in this nonsense

This is Russian propaganda of their idiotic ideas, you should not believe it

Russians fought in the same conditions

They teach but as russia don’t study by defeats so russians students teach this battle very generally

Don't give up the day job.

And allied war production in general. The Germans didn't get their "total War" economy going until 1943 or even 44 in some cases. Way too late.

But Ukraine was pretty much 50% of the entire reason Hitler invaded the Soviet Union (The other 50% was the oil of the Caucasus). Germany was steering straight towards a food and fuel crisis and needed the wheat and oil if it wanted to survive. In fact in Hitler's original vision of Barbarossa the southern thrust was the main thrust, as this would have yielded him the vital grain fields of Ukraine. However Franz Halder looked at this plan and thought: "We defeated France by taking Paris, therefore if we capture Moscow we will have defeated the Soviet Union." With that, Halder altered Hitler's plan by changing the main thrust towards Moscow. Hitler was furious and ordered Ukraine to be taken, as in his vision the grain fields of Ukraine where strategically important for the food situation in Germany. To him Moscow had way less value as a strategic objective. With this screw-up, and Halder's later screw-up of denying reinforcements to Army Group South when they were trying to take the oilfields and fighting Stalingrad, Halder is one of the reasons the Eastern Front was lost. It's no wonder Hitler later sacked him.