Mongolia underwent a democratic revolution in 1990, ending the communist one-party state that had existed since the early 1920s. In 2002, a law was passed that enabled Mongolian Army and police forces to conduct UN-backed and other international peacekeeping missions abroad. In August 2003, Mongolia contributed troops to the Iraq War as part of the Multi-National Force – Iraq. Mongolian troops, numbering 180 at its peak, were under Multinational Division Central-South and were tasked with guarding the main Polish base, Camp Echo. Prior to that posting, they had been protecting a logistics base dubbed Camp Charlie in Hillah.