Eleven Japanese delegates were present for the formal surrender ceremony aboard USS Missouri in 1945.
The delegation included two official signatories and nine additional representatives. Mamoru Shigemitsu signed for the Japanese government, while General Yoshijirō Umezu signed for the Japanese Imperial General Headquarters. The other delegates came from the army, navy, and Foreign Ministry.
Only the two signatories were initially revealed to the press, partly because Allied authorities wanted to limit security risks and keep the ceremony tightly controlled. The full group traveled from Tokyo to Yokohama before boarding a vessel that carried them out to USS Missouri, anchored in Tokyo Bay.
The number eleven refers to the Japanese delegation, not the total number of people signing the document. Nine Allied representatives signed after General Douglas MacArthur and U.S. Fleet Admiral Chester Nimitz. Confusing the Japanese delegates with the Allied signatories is a common error when counting participants in the ceremony.