Honestly, if there is a modicum of truth in this story, it is newsworthy. Apparently, when FDR took office in 1933 and promised radical reform to the counter the effects of the Great Depression, a group of prominent businessmen, including Heinz and Prescott Bush, the current president’s grandfather, attempted to conduct a coup with the services of 500 000 ex-servicemen.
Much to Roosevelt’s credit, he probably forgave them and gave them all Social Security benefits.
It is from the BBC so it can’t be discarded too easily.
You can link to the BBC story here.