"Merlin Dorfman" wrote

Four years ago, the draft-dodger Bush was running against
somebody who volunteered for the Army and was on the ground in
Vietnam, albeit in a non-combat role. Nevertheless he managed
to make himself look like the hero and the volunteer look like
a coward.

Draft-doger.
In the above context, "draft-doger" would appear to be anyone who was not
'drafted'.
Bush (TX ANG - fighter pilot)
Gore (Army volunteer - journalist?)
Kerry (Naval Reserve - eventually a SB captain)
Clinton (none - actively avoided being drafted or serving in any way)

Clinton seems to be the only one who fits the 'draft-dodger' moniker.

How is volunteering for the Air Guard different from volunteering for the
Navy Reserve?

2/3 of the military during the Vietnam era did not see SEA. And, Art K's
screechings notwithstanding, you usually do not get to choose where you go.

Pete