first of all it is not "just infantry" it is a HARD life and hard work, but if you dont pass ranger school you will stay in the ranger batt until you pass and if you never pass then you still keep the 11B mos you just get moved to a light unit like 10th mountain, 82nd, 173rd, or 101st. Again it is not "just infantry" you have to know alot and alot is expected of you.