The Department of Defense reports that the majority of sexual assaults in the military were perpetrated by males upon males. See page 9 of the linked report. So parents will apparently do well not just to keep their daughters out of the armed forces, but also their sons. Looks like the DOD and the Senate really need to start asking some questions that--to put it delicately--they've been avoiding asking. It could be completely random post-adolescent juvenile behavior, but given that the military rate of sexual assault exceeds that of the civilian world, it's likely to be correlated to something else.