Is the Sec Nav a marine? No
is the marine corp under the dept of navy? Yes
no dept of the marine corp, that's why it's a "corp"
until 1948 their was no Air Force, it was under the dept of the army
is a commander a member of the service he is commanding? Duh
dont need a cite for common sense? That's why the Chairman of the Joint Chiefs is in everyone's chain of command irregardless of service. As well as SecDef and CIC
as far as Staub. Don't know him and don't care
Marine Corp?
Yeah, you know what you're talking about.