Sexual assault is a heinous crime which should not be subjected to the whims of the chain of command. The chain of command can easily be abused. Those higher up in the chain could use their authority to cover up sexual assault, either assault that they did or that others did.
I am of the opinion that the Uniform Code of Military Justice does not and cannot properly address cases of sexual assault in the military. The UCMJ was penned in a time when only free men and conscripts served in the military. A time when women were property and men forcing themselves upon women was ignored and sometimes encouraged.