Iron Man (1968 1st Series) #197
"Call Him... Thundersword!" Script by Denny O'Neil. Pencils by Rich Buckler. Inks by Ian Akin and Brian Garvey. Cover by John Byrne, Ian Akin, and Brian Garvey.
Story continues from Secret Wars II (1985 Marvel) #1. Several minutes after being detained at the local jail, Thundersword breaks free!