Avengers #33

"To Smash a Serpent" – (20-page story) – With Captain America hostage, the Avengers can't attack the serpents. Bill Foster walks out on Goliath, because of this. Captain America seems to have been brainwashed by the Sons, turning him into a fascist. The Avengers attend a Sons of the Serpent meeting while Hawkeye and the Black Widow attempt a rescue mission to save Captain America. During the meeting, Goliath argues with the Sons of the Serpent, but is attacked by a brainwashed Captain America. After a brief battle, Goliath follows the escaping Serpents to their ship. Black Widow finds the real Captain America captive and rescues him. They capture the Sons of the Serpent and their leader turns out to be General Chen