The 1st Cavalry Division took control of the U.S. peacekeeping contingent in Bosnia-Herzegovina with approximately 6,900 personnel on 20 June 1998, as part of the multinational Stabilization Force (SFOR). 1st Brigade served for Rotation SFOR 4. 2nd Brigade served for Rotation SFOR 5. 2nd Brigade was alerted for action during the Russian move from Bosnia to the Pristina International Airport in June 1999, but no action was ultimately taken after consultation at the highest levels in NATO. In August 1999, the 10th Mountain Division took over operations in the Tuzla/Multinational Division North area.