I think this is very germane. American high tech is (still, although this is changing) intended primarily to fight conventional wars, and the US can do things to an organized military in the field that are much harder to do to guerrillas hiding in urban environments.
Also, technological change is occurring very rapidly at this particular point in time, with the stealth, computer, and robotics revolutions all occurring simultaneously. From what I’ve seen, I’d wager good money that American military technology in 2012 is considerably different than in 2003, the last time it faced a conventional military (in Iraq). And that time, as well as the previous time (Gulf War), the enemy army was so overwhelmed that many of the units did not try to fight.
This is for a variety of reasons, but in simple terms, modern mechanized warfare is won by assembling a local preponderance of force and driving it through defenses and into the enemy rear areas. In the past, even with aerial scouting, sufficient fog of war and difficulty in processing and transmitting information quickly and reliably made it possible to disguise the assembly of such a force until it was too late to respond usefully. Modern technology, from satellite imagery to drones to spy planes to IR cameras to look-down radars to nightvision equipment to stealth aircraft and so on and so on has made it MUCH harder to hide large concentrations of military activity, AND coordination/dissemination of information has VASTLY improved through computer networking. This enables command to respond to any force assembly the other technology has (almost inevitably) detected. A small force might be assembled too quickly for a response to be mounted, but a SMALL force will not win major battles by definition.
A large force has the unenviable choice of either remaining dispersed, passively allowing the US forces to pick and choose how to attack separated elements with massive force, or of assembling a large concentration that will immediately be drenched with a high volume of precision-guided, extremely violent weapons.
I would imagine that against a deployed major military force, IF the US decided to fight AND spend the money on a major effort, it would be astonishingly one-sided.
That’s WHY we’re unlikely to see that sort of fighting nowadays – maybe ever again. But on the other hand, asymmetric (guerrilla) warfare:
[ul]
[li]Costs much less to conduct (and orders of magnitude less to prepare for)[/li][li]Will result in lower losses when fighting the US[/li][li]Has some chance of working (as opposed to the “no chance at all” that a conventional armored force in the field has)[/li][/ul]