Yes it is a job to many. I tried enlisting when I was 17. The only reason I wanted to enlist was for college, as my father's military pay didn't cut it. My recruiters always had little functions for their potential recruits. I went to school with many of them. Excluding one, none of us were signing up to defend freedom, protect oil, spread democracy, stop genocide, overthrow governments, etc. We wanted to join for college money, for a paycheck (hence "job"), to escape poverty, or maybe just for some direction.
Yes they enlist expecting to defend our Constitution, foreign and domestic. This administration treats our constitution as toilet paper. I can't find one correlation between our occupation of Iraq and the oath these men and women took when they enlisted. The military should never shrink from their duty, as I don't want the military deciding our foreign policy. Which is why it is imperative for civilians to do THEIR duty and not stand for the bulls#$% (btw is it ok to swear on this board?). Defense of our democracy and freedom is not just the military's job. Without the citizens outcry/support it's just covered up fascism.
and btw, they may just have not known exactly what they were in for. My father spent 2 years as a recruiter. When it came time for me to enlist I was forbidden from talking with my recruiter without my father present. Want to know why? Because my father knew that some will lie and exaggerate to meet their quota. My father hated that job, as while he thought the ARMY was wonderful for him, he didn't think it was for most, and felt the need to tell it like it really was.