To be more clear, I have heard that if you get the extra starting experience from beating R6V1 on realistic or getting to Elite, that will put you past the point for the Private First Class Achievement and thus you will never be able to get it. (XBox 360)

Anyone know anything about this?

Here's a link for my 'source'.
http://www.xbox360achievements.org/f...ad.php?t=62106