She is doing this as tensions are arising around the world and as a backup to her security.

I know Victoria has done, or is doing, a military course, and Leonore of Spain and Elisabeth of Belgium finished their national service recently, but are other Royals quietly--or not so quietly--taking training in the armed services? IIRC Louise is doing so too, but I am wondering if long-serving Royals are headed for refresher army courses.

https://www.youtube.com/shorts/_BG00cYW0dU