He was accused of 'assault'. = He was charged with 'assault'. = 'Assault' charges were brought against him.
He came 'under assault' for his unusual beliefs. [=he was severely criticized for his unusual beliefs]
He was found guilty of 'sexual assault'. [=the crime of touching someone in an unwanted sexual way]
(..) What are you doing, coming out of the bushes like that? Hey, inside the TOC, do you see us? We need to come in. You know that thing where the initial assault is just a ploy to draw people in for the real attack? Jesus Christ. Open your door or I'm gonna fucking blow it open! (..)2016 13 Hours
(..) Emergency exit. Got a couple Febs on detail, cameras. It's locked. What kind of firepower you guys carry other than assault rifles? We've got multiple small arms. And ammo in the TacOps Center just beyond the cantina. That way. (..)2016 13 Hours