But then I read the article and it says that this is an "olive" beret (vs. SF's "hunter green") and it's a real thing in this unit?
It is so outlandish I think it is a hoax. It has to be, right?
I listened to a podcast (spycast from 25 July 2017) the other day interviewing James Stejskal, who served in and wrote a book about detachment Berlin - the SF unit assigned to stay behind and organize/conduct sabotage/insurgency in the event of a Soviet invasion. The unit is really interesting and a lot of what they did in terms of tradecraft has served other SMU elements well (even though they were not an SMU). One of the things he talked about was the hardest for some members - causing them to leave - was having to forgo wearing their SF tab, green beret, and special skill badges - instead having to wear the uniform and pretend to be MPs. That esprit shit can cut both ways.
There's a book about the Det., I wrote a short review in the book section. That unit is fascinating and I wish more were available. They were so unique it would be hard to place them in a modern "box." SMU? CIF? Somewhere in between? They were such a unique unit with a unique mission they defy any label.
"In the event of Armageddon, we totes need you to stay WAY behind the lines and cause damage."
"For reals. I'm in."
Our country, any country, is practically doomed when we can't find such men and women.