Military life in general is not bad. I have been in it for the last 38 years first with my Dad, then myself, and now my husband.
Has he already enlisted? If not, and I hope not, have him talk to an Air Force recruiter! I am not being funny...my Dad spent 23 years in the Navy and I have a lot of respect for it, but for your sake, I would go Air force (that is what my Dad told me!). I don't think anyone can disagree with me when I say that more money is put towards the bases and services for family members in the Air Force than the Army or Navy and that means the quality of the houses and neighborhoods your child/children will be raised in. Also depending on his specialty, you can count on him being gone to sea for six months at a time (at least) in the Navy. The Air Force tries to keep deployments down to 120 days if they can.
If he has enlisted, don't worry, it is not the end of the world. When my husband deployed, I just picked up and took off to my in-laws or my parents house for two weeks. I would have gone crazy with two babies only 20 months apart if I had to stay home all the time, so break it up with short trips or have some family come see you. Remember that there are a lot of other young women with children at your base with the same situation and you can babysit swap for them too. In the Air Force, there are on-base programs and on-base child care for when you have had it and need a break. There is also family support (Air Force) who will set up to mow your lawn or service your car or provide other services you may need while hubby is deployed so they try to make it as easy on you as possible. If you have any questions, feel free to ask.