I am so sorry for your problems with the ex. I would think if he is still in the military that would be better for you. Do you have an attorney? If there is a custody order in place he just can't not obey it. You might have to take him back to court or take the custody order and have the police go with you to pick up your children. How old are these children? I do know that my court order required I let my ex know where I lived with the children and the phone number there. Have you actually spoke to him to demand the kids back? What does the court order read. He may lose his visitation over this or have to have it supervised. Let us know how it is going for you. You are in our thoughts and prays.