It has an interesting immigration stamping from Japan with the text Under Administrative Agreement.
On the datapage, the holder an official status described as:
|PRIVATE, UNITED STATES ARMY, IS ASSIGNED TO THE MILITARY ASSISTANCE PROGRAM MISSION TO TAIWAN.
DIPLOMATIC REQUEST PAGE
|This passport is valid for travel abroad only while the bearer thereof maintains the official status for which the passport was issued or endorsed. If the travel on official business for which this passport was issued or endOrsed extends beyond 2 years from the date upon which the passport was issued, it must be renewed.
This passport must be returned to the Department of State for endorsement prior to each departure from the United States.
THIS PASSPORT IS NOT VALID FOR TRAVEL TO THE FOLLOWING AREAS UNDER CONTROL OF AUTHORITIES WITH WHICH THE UNITED STATES DOES NOT HAVE DIPLOMATIC RELATIONS: ALBANIA, BULGARIA, AND THOSE PORTIONS OF CHINA, KOREA AND VIET-NAM UNDER COMMUNIST CONTROL.
THIS PASSPORT IS NOT VALID FOR TRAVEL IN HUNGARY.
|I, the undersigned, Secretary of State of the United States of America, hereby request all whom it may concern to permit the above named citizen of the United States safely and freely to pass and in case of need to give such aid and protection as would be extended to like citizens of foreign states in the Unites States.
Given under my hand and the seal of the Department of State at Washington.
[Signature: John Foster Dulles]