I saw “General Walker” and “arrest” so I looked up “Arrest of General Walker.” I got “General Edwin Walker” as the first result, who I just now learned was “the target of an assassination attempt in his home on April 10, 1963” by none other than Lee Harvey Oswald. https://en.wikipedia.org/wiki/Edwin_Walker
I believe the General Walker in the above article is this one. https://en.wikipedia.org/wiki/William_Walker_(filibuster)