https://en.wikipedia.org/wiki/Bujinkan
In terms of career options, I know there is at least one group within the US Marine Corps, and a private military contractor in San Francisco which recruits from their own dojo.
https://en.wikipedia.org/wiki/Bujinkan
In terms of career options, I know there is at least one group within the US Marine Corps, and a private military contractor in San Francisco which recruits from their own dojo.