"If your friend disagrees with the pacificism of Quakers, he/she could be subject to the draft. I don't think it is clearcut and is subject to a fair amount of interpretation by draft boards, but I'm guessing."
With this it wouldn't be a problem with regards to him - he'd go sign up the day there was one.
"Medical conditions? who knows? flat feet used to be enough."
I'm curious about this one. There are so many more medical conditions now than there used to be it seems - especially people diagnosed with mental illnesses such as depression, anxiety, add, etc. Plus, what about people with chronic illnesses that must be on meds all the time or have really bad effects? Being in Iraq would not be easy on them.
Also, what about obese people (which there are more and more of)? It would take longer to get them into shape to fit a war than it did in the 70s since there were less obese people then. I know people that can't even walk down a flight of stairs without needed to take several breaks...