At the end of the Pacific War, the Marine Corps had 510 war dogs. Of this number, 491 were deprogrammed, a process that could take a year, and returned to their owners, given to their handlers, or returned to the Army, which had provided 41 to the Corps. Only four dogs could not be returned to their masters because, even after extensive retraining, they proved "incorrigible" and were considered to be unsafe for civilian life.
Only the military has the time to retrain a war dog. Do you have a year? Retraining Pit Bulls is a fools errand.