<p>As pointed out by others, three years is a long time. You will change in many ways, you will mature due to being 3 years older and being in the Army will change your perspective.</p>
<p>If you have decided that is what you want to do, keep college at the back of your mind but start planning about a hear and half or two years from now. There is no point in planning for three years from now. Colleges are not going to spend time on a student who wants three year leave of absence.</p>
<p>If you are going for one year, yes you need to think of it now before you get immersed in being in a military unit.</p>
<p>So, if you have decided to join for three years, any conversation on colleges is premature.</p>