mykidsfirst,
I am assuming a couple of things. That your wife is either deployed or TDY and away from you and the kids right now. That you are liviing on or near a military installation. And that nobody has file for divorce yet.

My suggestion to you if you want to keep the kids with you is to go to the nearest JAG office to some free (not always the best) advice on what your rights are and to see if they have a list of local attorneys to use. I would then suggest you find an attorney as soon as possible and file for divorce before she does. If she is making more than you right now and has the possibility of being away because of her service commitments you should be able to show that you have a better handle on raising the children. Yuo probably won't have to follow her around the country if you get a good attorney to represent you. You may even have the opportunity to go back to your home of record and possibly have the kids during the school year and she would get them during the summer break. You have several options but I don't think you will be required to follow her. Good Luck