During the battle, UN dead were buried at temporary grave sites along the road. Operation Glory took place from July to November 1954, during which the dead of each side were exchanged. The remains of 4,167 US soldiers were exchanged for 13,528 North Korean and Chinese dead. In addition, 546 civilians who died in UN prisoner-of-war camps were turned over to the South Korean government. After Operation Glory, 416 Korean War "unknowns" were buried in the National Memorial Cemetery of the Pacific (the "Punchbowl Cemetery" in Honolulu, Hawaii). According to a Defense Prisoner of War/Missing Personnel Office (DPMO) white paper, 1,394 names were also transmitted from the Chinese and North Koreans during the operation, of which 858 proved to be correct. The 4,167 returned remains were found to be 4,219 individuals, of whom 2,944 were found to be Americans, with all but 416 identified by name. Of the 239 Korean War unaccounted for, 186 are not associated with the Punchbowl Cemetery unknowns. From 1990 to 1994, North Korea excavated and returned more than 208 sets of remains, which possibly include 200 to 400 US servicemen, but very few have been identified due to the co-mingling of remains. From 2001 to 2005, more remains were recovered from the Chosin Battle site, and around 220 were recovered near the Chinese border between 1996 and 2006.