Civilian casualties At least 25,000 Japanese civilians lived on Saipan at the time of the battle. Civilian shelters were located virtually everywhere on the island, with very little difference from military bunkers noticeable to attacking Marines. The standard method of clearing suspected bunkers was the use of high-explosive and/or high-explosives augmented with petroleum (e.g., gelignite, napalm, diesel fuel). The weapons used and the tactics of close quarter fighting resulted in high civilian casualties. The U.S. erected a civilian prisoner encampment on 23 June 1944 that soon had more than 1,000 inmates. Electric lights at the camp were conspicuously left on overnight to attract other civilians with the promise of three warm meals and no risk of being shot in combat accidentally. More than 1,000 Japanese civilians committed suicide in the last days of the battle to take the offered privileged place in the afterlife, some jumping from places later named "Suicide Cliff" and "Banzai Cliff". These would become part of the National Historic Landmark District as Landing Beaches; Aslito/Isley Field; & Marpi Point, Saipan Island, designated in 1985. Today the sites are a memorial and Japanese people visit to console the victims' souls. Military awards In addition to William O'Brien, Ben L. Salomon and Thomas A. Baker, Gunnery Sergeant Robert H. McCard and PFC Harold G. Epperson, were each posthumously awarded the Medal of Honor. PFC Guy Gabaldon, of Headquarters and Service Company, 2nd Marine Regiment, 2nd Marine Division, was credited with capturing more than 1,000 Japanese prisoners during the battle. Gabaldon, who was raised by Japanese-Americans, used a combination of street Japanese and guile to convince soldiers and civilians alike that U.S. troops were not barbarians, and that they would be well treated upon surrender. For his outstanding bravery, which earned him the nickname, "The Pied Piper of Saipan," Gabaldon received a Silver Star, which was upgraded to the Navy Cross. During the war, his commanders had requested that he receive the Medal of Honor for his actions; however, his initial award was the Silver Star. In 1998, efforts were re-initiated to secure the Medal of Honor for Gabaldon. The effort was ongoing in 2006. Aftermath With the capture of Saipan, the American military was now only away from the home islands of Japan. Holland Smith said: "It was the decisive battle of the Pacific offensive [...] it opened the way to the Japanese home islands." The victory would