My ex-wife recently remarried to a man that is in the military. It turns out that this guy is very abusive to her, physically and mentally. There's been several times this guy has put his hands around her neck in front of my 9 and 14 year old. Both of my kids are very unhappy and scared of this guy. I found recently from the ex that he has spanked my daughter and has been physically abusive to my son as well. What does a guy do that has little money for court costs or doesn't know anything about the courts? How can I get custody of my children?