Sorry to throw a wet blanket on that idea but I’m not sure even he could. There are too many plants to ferret out of the system. You would just about have to destroy the experienced officer corps to be able to reconstruct. Of course, the attitude of the staff is a reflection of the management. A few good firings and people will get with the program and fall in line. That would be a start.
Firing most of the three and four star officers would get the message down the ranks quickly.