A classified memorandum by the Army Intelligence Agency reports that 2,000 members of the United states Armed Forces, captured in the Sino-American War, have been transferred to Manchuria.
Postscript: As of 1998, their status had remained Missing In Action not as Prisoners Of War.
[added 9/10/2022]
Subsequent Events:
References:
U.S. Tracked American Korean POWs in China
home.att.net/~dstormmom/kor-pow.htm