One of the best places to find the history of the kilt is on Matt Newsome's web site. It was quite informative when I first got into wearing the garment myself...
http://albanach.org/
and let's not forget...
"A veteran, whether active duty, retired, national guard or reserve, is someone who, at one point in his life, wrote a blank check made payable to "The United States of America", for an amount of "up to and including my life." That is honor, and there are way too many people in this country who no longer understand it." anon