The recruiter's job is simply to get the recruit to join. After that, he will never see that recruit again. As a result, it's sad but true that some recruiters (not all) will flat-out lie to a recruit. Whatever happens to the recruit down the road doesn't matter, because he has already improved the recruiter's numbers.
That being said, I still find it hard to believe that any Army recruiter would guarantee a recruit that he would never see combat as a soldier. That's so much of a stretch as to be ludicrous. And given the fact that we are hearing this from Ms. Niederer, who we know is a Code Pink sympathizer and not very stable at the moment, I don't find it that trustworthy.
Having dealt with recruiters in my past I know they tell you all sorts of stuff. Luckily I had a teacher in school (jrROTC) who was a Major in the air force and he set me straight on a large number of things.
That of course was when I was 17. At 24 years old and graduated from college he could not have been so duped into believing that.