Here is why I think the Military should shoulder a lot of blame here.
1.) This man's rank afforded him vast levels of power. Having grown up in Trenton, hell I've met the guy (briefly) he is unto a tin god even in civilian circles (Trenton's lifeblood is the base). This is to be tempered with the fact that the screening he goes through is supposed to be immense. Things of this nature slipping by (and continuing to go 'unnoticed') means someone didn't do their damn job. Bringing me to..
2.) While the base commander can (and in known cases some others have) do something as frivalous as fly in a herc to another town to eat at his favourite restraunt and fly back), none of what he does is a mystery. There are people who's job it is to know what he's doing and what kind of danger he's in. The odds this could happen and no one be the wiser is rapidly approaching 0, especially as some of the people he raped were military. These things ARE reported and someone took a report that read "My Boss is a rapist" and put it through the shredder for the benefit of their own career.
This is one monster who did the acts, and an unknown number who enabled, covered for or looked the other way for this monster.
The wife is an enigma. Did she know? Was she a Homolka? Or is she another victim. If she didn't know (and he'd have no problem hiding things from her with his power and rank and the ability to end any discussion with 'its classified') I feel as bad for her as any of the families victims. What would you do if your spouse turned out to be a psycopath? How much would that mess you up?