I don't know, this is all I could find that might cover what was done.

Wartime Statute of Limitations Section 3287 establishes a suspension of the statute of limitations covering wartime frauds committed against the United States45 that allows for prosecution at any time up to five years after the end of the war.46 At one time, it could be said with some conviction that Section 3287 "appears to have only been used in cases that involved conduct during or shortly after World War II" and none since.47 That is no longer the case.48

In 2008, Congress amended the section to make it clear that the provision covers misconduct during both declared wars and periods of armed conflict for which Congress has explicitly authorized use of the Armed Forces.49 The same amendment extended the period of suspension from three to five years.50 The provision applies to crimes related to conduct of the conflict as well as those that are not.51 The offense, however, must "involve the defrauding of the United States in [some] pecuniary manner or in a manner concerning property."52 The provision's five-year clock begins to run with the end of the war or conflict, but there is some difference of opinion over whether a formal termination must come first.53