The soldiers served as a key part of U.S. intelligence, but nearly 50 years passed before their efforts became public.

JAPAN, — A World War II-era "good luck" flag has finally made its way home ... Cemetery in September to pay their respects to fallen American soldiers, including Dorsey’s great-grandfather.

However, when the United States went to war with Japan in 1941, Nathaniel’s grandson, who was Takashi’s grandfather, and other family members burned Perry's American flag for fear of persecution.