Free college, job skills, leadership skills, etc... can be very enticing. However, when it comes time to "pay the government back", or go into a hazardous deployment, some balk. "Oh, they were serious about that part?" There are many non-deployable units in the U.S. military. And in that situation course, by all means, knock yourself out and have a family. Even in deployable units, go ahead and have a family. Now, I can't speak for the other branches of U.S. service, but I know that in the Marine Corps, a unit will generally receive a "Warning Order" that they will deploy about 6 months to a year from the "go" date. As that time draws nearer, the date gets roughly narrowed down to a certain month, then week, then day, etc... It's always in flux, but the date of departure is usually fairly close to the original Warning Order. My long-winded point is, is that you are given plenty of time to be ready and prepared for deployment. This should be the time to take measures to make sure you do not get pregnant. You can still have kids and have a career and still be deployable. This particular career choice and having a family just requires a little more thought in planning because you took an oath to be able to perform your duty. The saying I remember from my time in was "If you aren't deployable, you aren't employable."