Sexual assault of any kind is & has always been primarily about asserting *Power* over another, in militarty capacity or not.
That was true so long as the phrase "sexual assault" had its proper English denotation, reflected in many laws on the subject. Unfortunately the phrase is now Newspeak and includes not only what is properly called sexual assault and/or rape in English, but also the stolen kiss of romantic poetry (not about power, but about hopeless longing), misreading cues in a make-out session and doing something the woman takes offense at even if one stops when she objects (about lust not power), and having sex with a woman who took a bit of "Dutch courage" to lessen her inhibitions if she happens to regret it later (likewise).