He says that Patton held in January 1944 that the Army should stick with the Sherman and not bring the M-26 Pershing online. Maybe it's a name thing. Pershing was screwing Patton's sister Nita for a while before the first world war.
If you read the Patton Papers, Patton was OH SO hoping Nita would marry Pershing.
Walt
Turns out that 20 years later Pershing would lose another woman, to Douglas MacArthur. Unlucky at love and all the rest.