I think they used Meguiars polish:

20 screaming polishers, 50 pounds of polish, 600+ man hours...... - Autopia.org

 

Yeah, that was a buddy of mine, Joe Fernandez (owner of Superior Shine detailing) who was the lead on that project and the B25 before it. Both planes are part of General Lyon's collection housed at John Wayne Airport. I've been over there and discussed some maintenance procedures with the guys, but polishing these two WWII birds was more than they could handle on their own. Unfortunately for me, my schedule didn't allow me to part of either buffing session. The crew did amazing work though!

 

Just think how quick that army could buff out a CF!