The task, code-named Operation Joint Guardian, proved exceedingly difficult. Organized as the Kosovo Forces (KFOR), the Allies were finally able to enforce a tentative peace by October 1999. But even now, there is no end in sight for the current peacekeeping mission, and the path leading to a larger political solution regarding Kosovo's future has been equally elusive. The Army's mission in Kosovo was significantly different from the warfighting customarily associated with military service, but it was no less important and no less dangerous. This brief study chronicles the origins of U.S. involvement and the peace enforcement operation that followed through 2005.