Vietnam is a great example because they had everything the swiss guard did not. Experience, manpower, places to hide and an enemy who doesn't have the technological advantage of 21st century tech. Also you should know the US only technically lost because of political pressure to pull out. Not because we lacked the means to fight.
Except now it is fighting within a city. Against an army that is well-equipped and well-trained. With a high civilian population. The US army cannot go all willly-nilly and shoot civilians. Especially not in a place where there are civilians with cell phones all the time. The media cannot be silenced and people within the United States will be horrified. Massive riots if you just bomb and go gun crazy on Vatican City. I'm not sure the US government would feel comfortable with that.
Do you have any idea of the basics of warfare? I don't care if the swiss army is comprised super soldiers zero experience fighting in an actual war.
Basics of warfare: have a highly motivated and well-trained army. Achieve military and strategic objectives. Outflank and outmaneuver the enemy. Is any of that correct?
Also, the Swiss Guard has proven its fighting capabilities throughout the centuries. So I wouldn't run around saying that just because they haven't fought in the Middle East that they cannot prove themselves.
Holy shit. You do realize the United states has more military strength than all of Europe combined right? You're actually claiming a bunch of glorified body guards can beat the worlds biggest superpower. NOPE, sorry not gonna happen.
Holy shit. You do realize most of our bloated military budget goes to research right? They really aren't super soldiers. We have numbers and modern weaponry. Also, no I'm not saying that the Swiss Guard will beat the US army. I'm simply saying that they can most certainly hold their own against the US army for a certain amount of time until the rest of Europe puts down their tea, or whatever other beverages they enjoy, and charges forward to their defense.