Why is this attack called the battle of the bulge?

Explanation:

The batle of the bulge was fought at a bulge in the "line" that separated. the word line refers to the front lines or the line along which most of the fighting takes place. the bulge in the line refers to a gain or loss by either side so it looks like the line is bulging. that is why it was called the battle of the bulge.

Hope this helps

um how much