Military gf/wives

So my boyfriend has been in the Air Force for over a year now and we've been very fortunate that after BMT and his tech school that he got stationed at a base that is 4-6 hours away from me (it's the closest Air Force base to me) so I see him almost every 2 weeks or so. I know sooner or later he will be stationed somewhere else, possibly much farther. We have talked about marriage a lot, and he constantly tells me and his family how he wants to marry me soon. He's 19 and I'm turning 19 in January. Would it be too soon to be married, not right now but maybe a couple of years from now? Especially since we'll eventually be far from each other due to the military situation. I'm in college. We have been together for almost three years and I do want to marry him, I'm so in love with him. But I'm just wondering would it be too soon? Should I not have the fact that he's in the military be something that pushes me more toward marriage?