An ancient and creaky administrative regime like what the military has is nearly impossible to manage financially. The GAO has tried and essentially given up on trying to audit.
The problem with Oracle and SAP is that they aren't "home builders" they are parts and tools salesmen. They don't know ANYTHING about BUILDING HOUSES... they just sell the tools. even their own businesses aren't actually GOOD businesses with huge amounts of nepotism and politics. The first thing when you sign up with them (or any of the big named software vendors) is that you have to find yourself a "contractor" just like building a house. The "big famous software company" disavow any actual results, your mileage may vary, etc.... They're like the "Music Man" selling boy's bands.
If you want to audit the military, that's where North Korea has the correct idea. Generals don't "retire" until the leader says they do. Start enforcing Sun Tzu style discipline to get this done... knock off a few 5 star general's heads. That'll get things done. At a minimum, strip them of private residences, and put them in boot camp barracks (complete with scrubbing their own floors) till they get this thing done.