"When I wore green in the J, you didn't wear anything that flashed, jingled, sparkled, stood out, or that could give away your position - or wear anything that could get caught on projections, when jumping off vehicles/APC's/tanks.
Numerous blokes lost fingers when jumping down off stakeside trucks, and rings on those fingers caught on protruding bolt shanks"
That was how we were taught as well and for the same reasons.
But things have changed. Was watching the Sandhurst Program the other night
and was sure one or two of the Officer cadets had tattoos.