1995: Bosnia: Operation Deliberate Force, On August 30, 1995, U.S. and NATO aircraft began a major bombing campaign of Bosnian Serb Army in response to a Bosnian Serb mortar attack on a Sarajevo market that killed 37 people on August 28, 1995. This operation lasted until September 20, 1995. The air campaign along with a combined allied ground force of Muslim and Croatian Army against Serb positions led to a Dayton Agreement in December 1995 with the signing of warring factions of the war. As part of Operation Joint Endeavor, U.S. and NATO dispatched the Implementation Force (IFOR) peacekeepers to Bosnia to uphold the Dayton agreement.