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]
(..) (GRUNTS) Somebody write me a letter! Come in, Ninja Commander. This is Cowboy Astronaut Agent Nate, over. Ninja Team Commander, are you in position? I'm about to launch the assault. HENRY: (THROUGH WALKIE-TALKIE) We can absolutely do that. That's not gonna be a problem. Ha-ha! Dr. LeFreeze! (GASPS) (..)2016 Storks