Combined Cadet Force
I still have a hard time explaining this to people who don't know what it is.
Essentially, kids are "voluntarily" put into this thing after school where they dress up in uniforms and berets and forced to do marching drills.
You then pick whether you want to do Army/Navy/RAF, and you get to do some shooting drills. Guns are brought into the school (without ammo) and kids are shown how to shoot.
Every year each group goes on a summer camp type excursion where they get to fire real weapons or fly gliders or something.
And that's it.
I was in the Air Cadets although it wasn't part of the school. It was an after school activity and was great. I got to shoot guns and fly planes and develop leadership skills and character. While some did use it as a springboard into RAF (direct or via sponsored university place) there was no push to do so.