noting prisoner hygiene, quality of medical care, variety of diet, and weight gain. They talked to the prisoners and asked for their comments on conditions, as well as providing them with copies of the Geneva Convention. The IRC delegates dispersed boots, soap, and other requested goods. A prison camp was established on the island of Koje-do, where over 170,000 communist and non-communist prisoners were held from December 1950 until June 1952. Throughout 1951 and early 1952, upper-level communist agents infiltrated and conquered much of Koje section-by-section by uniting fellow communists; bending dissenters to their will through staged trials and public executions; and exporting allegations of abuse to the international community to benefit the communist negotiation team. In May 1952, Chinese and North Korean prisoners rioted and took Brigadier General Francis T. Dodd captive. In 1952 the camp's administration was afraid that the prisoners would riot and demonstrate on May Day (a day honoring Communism) and so United States Navy ships (such as the USS Gunson Hall) removed 15,000 North Korean and Chinese prisoners from the island and moved them to prison facilities at Ulsan and Cheju-do. These ships also participated in Operation Big Switch in September 1953 when prisoners were exchanged at the end of the war. Communist camps The Chinese operated three types of POW camps during the Korean war. Peace camps housed POWs who were sympathetic to communism, reform camps were intended for skilled POWs who were to be indoctrinated in communist ideologies and the third type was the normal POW camps. Chinese policy did not allow for the exchange of prisoners in the first two camp types. While these POW Camps were designated numerically by the communists, the POWs often gave the camps a name. Camp 1 – Changsong – near Camp 3 on the Yalu River. Camp 2 – Pyoktong – on the Yalu River. Camp 3 – Changsong – near Camp 1 on the Yalu River. Camp 4 – north of Camp 2 Camp 5 – near Pyoktong. Camp 6 – P'yong-yang Camp 7 – near Pyoktong. Camp 8 – Kangdong Camp 9 – P'yong-yang. Camp 10 – Chon ma Camp 11 – Pukchin Camp 12 – P'yong-yang- (Peace Camp) was located in the northwestern vicinity of the capitol. Nearby were several other camps including PAK's Palace. Bean Camp – Suan Camp DeSoto – P'yong-yang locale – The camp was near to Camp 12. Pak's