Raub got it.
(almost)
Pershing was given the Rank "General of the Armies" this is one step up from a 5-Star "General of the Army".
The Rank "General of the Armies" was created for General George Washington, posthumusly. Pershing was the only man to carry this rank while still alive. He was allowed to create his own insignia for the rank, but he never wore more than 4 stars.