Quote Originally Posted by fluter View Post
I think it's just the opposite. The Army is the only one officially adopted.

See this recent thread I was wondering whether this would lead to the other services' adopting "their" tartans.
I read the thread (thanks for the link) and I think it is clear the US Army tartan is unofficial. As far as I can tell in my research, the Westpoint tartan is the only one adopted by the Army.

As for the other services, I am unclear. I had assumed they were all official as they are in prolific use. I was at a Coast Guard wedding a few years back and I saw kilts in tartans for the Coast Guard, Marines, Navy and Air Force. All really sharp looking.