In theory, this is a stalemate. Neither side won or lost. Because of this, both sides of the conflict are still enemies, and a large number of troops is still stationed along both sides of the line. The armistice agreement explains exactly how many military personnel and what kind of weapons are allowed in the DMZ. Soldiers from both sides may patrol inside the DMZ, but they may not cross the MDL. Sporadic outbreaks of violence due to North Korean hostilities killed over 500 South Korean soldiers and 50 U.S. soldiers along the DMZ between 1953 and 1999.