I have a master’s, actually. My university offers a 9 month program to those who already have their degree. It looked intriquing.
I’m not in the legal area but I do some career advising. One concern is that, given your level of education, you may be bored in this type of job. However, some here indicate that the responsibilities/activities can vary. I’ve found that job shadowing can be very helpful. This isn’t the same as an internship or practicum, rather it simply involves watching someone who does the job of interest. Most of the time you can find employers who will do this. Of course, confidentiality issues can limit it somewhat. Do you have your master’s in history? Have you considered teaching at a community college or even getting a doctorate and pursuing your passion of studying the civil war?