CIA activities in Indonesia the British Southeast Asia Command (SEAC) had already given the go ahead for the U.S.'s participation in Batavia, so the Dutch were forced to allow the ICEBERG mission. Vice Adm. Lord Louis Mountbatten was the supreme allied commander of SEAC and created a committee called "P" Division. The sole purpose of this division was to keep a watch on what the U.S. was doing. ICEBERG was commanded by OSS Major Frederick E. Crockett who arrived to Batavia on September 15, 1945, only one month after Japan surrendered, ending WWII. Crockett then traveled to Java aboard the HMS "Cumberland" to head
Alien registration in Japan issuance of an ARC generally took about two weeks from the filing of the application. Alien registration could also be evidenced by a , which is an A4-sized printed copy of the information currently on file, similar in form to the residency registration certificates used by Japanese nationals. Because this form of certificate did not contain the subject's photograph, it was not as widely accepted as the ARC for identity verification purposes, and was mainly used as a temporary certificate when an ARC was unavailable. The ARC had to be surrendered when the foreigner left Japan unless they had a