I am considering reclassing from Infantry to MP. What’s the process to go from National Guard to active duty Army for MP?

The first step would be to see a recruiter to see if he can get you a MP slot. Then he should give you a DD Form 368 Request for Condition Release. This needs to go up your Chain of Command to be signed by the first General in your chain or his designated representative. That process can be slow, but it never hurts to ask the Chain of Command if you can hand carry it to the appropriate authority. Once you have that, you basically enlist in the Army.

My advise and this is coming from a former MP, is not to become an MP. The two worlds civilian police and MP don't mix well. Not to mention I did more security guard duties than actual law enforcement.

It's either going to be MP transition course or you'll be an insert with the AIT phase of OSUT. The transition course would more likely be the case if you were thinking of staying guard side BUT a lot of our schools are now with our active and reserve counterparts. BLC for example is 5 weeks for the guard when it used to be two. A buddy of mine just went thru 31E school and he was an insert and gone for 8 weeks where as I was only gone 2 in 2012.
And no, your civilian leo experience doesn't keep you from going to CID school. There is a program available to civilian law enforcement who qualify with certain credentials to work for the Army as CID or enlist as a 31D as it's a school for E5 and above, but you still have to be MOS'Qed.

I did the same thing, I reclassed from counterintelligence to MP. The same as you I was a civilian police officer and yes I had to do ait. I loved being an MP it was definitely more comfortable doing that.

you'll find being a mp is a lot different than being a civilian LEO... yes you have to go to AIT...going from the guard usually involves losing a rank and being shoved into the next cycle of recruits coming in. depending on the rank you have ... you might have to be in the barracks with the privates and then maybe not.. either way it will suck for 8 to 10 weeks... you'll be taught to shoot... and how to do mounted and dismounted patrols... wow kinda like infantry tactics... alot of what you will learn wont be too much different than what you know...stick with it... get used to working holidays and weekends... and get used to arresting army folks for all kinds of dumb stuff...

Go see a recruiter... You have to start there. Rank shouldn't be an issue however you may loose the corporal. But go see your retention people first they will have guidance

Don't be an MP. You work far more hours for the exact same paycheck as a cook or a clerk.

They're not going to let you do it because of the over strength of the MP Corp. I just recently went from NG to AD and had to reclass to 68 series.

Being an MP is much more about Combat Maneuver Support than the law enforcement side - the federal protective services have taken over most of the LE on active duty posts and MPs get some road time with them.

That said, I made the switch from infantry to MP in 2007 when I was a sergeant - I love it, which is why I chose MP as my branch when I commissioned as well.

Some go through a short 2 week course, and other have to go through the full 19 weeks. I don’t know what dictates that, but my buddy only had to go through a one month school in Virginia and he was in the 8 years prior.