Question

What was one reason the Battle of Barbarossa became a turning point in the war?

The German army suffered massive casualties.
The German army attacked in the middle of winter.
The German army was overconfident after defeating France.
The German army was weakened from fighting two countries at once.

Answer 1

Barbarossa was not really a battle, it was a campaign, in many ways are war on its own. All of the above are true, but the most true are 1 and 4, 2 and 3 are just facts

Answer 2

One of the reasons was that The German army suffered massive casualties. Remember that the Russians also suffered a huge number of casualties, but still they were able to hold their ground. The German army failed to push forward and ultimately they had to resort to attacking the United states. So the answer is the first option