The Purple Berets list statistics and other information about police brutality at home:
"Domestic violence is 2 to 4 times more common in police families than in the general population. In two separate studies, 40% of police officers self-report that they have used violence against their domestic partners within the last year. In the general population, it's estimated that domestic violence occurs in about 10% of families."
Domestic violence laws apply to everyone, including soldiers and police officers, but it may seem extra difficult if your abuser is one of those. You can read more about your rights on WomensLaw.org.