Why was the battle of Stalingrad so challenging for Nazi soldiers?

The battle at Stalingrad bled the German army dry in Russia and after this defeat, the Germany Army was in full retreat.

Explanation:

Because the Germans were worn out from advancing for so long and were starved of supplies. They were running low on food and ammunition even before they were encircled.

b) the confederacy had to pay all union war expenses.

the foundation of greek city-states: following the fall of the mycenaean civilization in the 10th century bc, the area surrounding the empire went through its own mini dark ages. answer and explanation