Internal Affairs 4 Megaupload MI5 Dals With Internal Affairs, MI6 Deals With Foreign Affairs, Who Are MI1, 2, 3 & 4?

MI5 dals with internal affairs, MI6 deals with foreign affairs, who are MI1, 2, 3 & 4? - internal affairs 4 megaupload

MI (Military Intelligence) has been to 19 places, but not all at once. Most were folded MI5, MI6 and GCHQ, after the war. I have a few studies on the Web: break MI1 (code), MI2 (Russia and Scandinavia), MI3 (Eastern Europe), MI4 (air reconnaissance), MI-8 (monitoring of military communications), MI9 (covert operations), MI10 (analysis of Arms)