Correct me if I am wrong, but I understand there is no one with current political influence, in the Bush (or Blair) administrations, who has had any personal experience of military service themselves.
I don't think you need to be corrected, you're absolutely right!!
There are suggestions of evolutionary reasons why populations should be capable of waging war, for self defence and improved access to resources etc.
Physically aggressive males are needed in every society, increasingly less so but they are not redundant and never will be. However there can also be a surplus of them. One study of gorillas I read ages ago (sorry to be vague, a dangerous thing here) showed that the aggresssive dominant males from time to time actually went to war with each other, killed each other, and then left the communities on both sides to live in peace. Some how when there is a war, and none of those in government understand the grass roots reality (or have any experience) it all goes a bit wierd.
One of the first things to observe is that modern military technology places civilians at risk more than ever before.
I think it may become increasingly difficult for the US military to feel they are understood, valued, and supported by their political masters. US soldiers are trained to kill, they know that, we know that.
Specialist international forces experienced in peace keeping, reconstruction, plus international NGO support exists in many former conflict situations around the world. The US military presence has become increasingly problematic.
The time to lead through diplomacy, and reaching out for international negotiation, and support is well overdue. This has to be led by politicians, it is not the work of the military.