Originally Posted by TitaniumAnimations
No, but the premise does. During the era, people thought the legions were unbeatable, that is... until the Germanic armies proved those people wrong.
You're still not able to use the comparison.
The Roman Legions fell because they grew outnumbered because of how many cultures they tried to take in vast regions of land. No matter how well trained your army is, when you're outnumbered, the peoples you've taken control of can't stand it anymore and revolt, you're going to lose. When trying to compare the United States being defeated in the manner in which you are, it absolutely doesn't work because of the cultural melting pot which exists in this country.
Not to mention this discussion all started over war with a FOREIGN power, not a power NEIGHBORING or WITHIN the country that is at war.