I reverse park 99pct of the time. I think it's safer to be able to see where you are going when getting out of a space, so you can more easily see other cars, children etc.
I think it also makes more sense with the steering mechanics, and I find it easier than going in nose first.
But yea, definitely easier to squeeze into tighter spots going backwards, and not that much harder after you've done it a few times.
I've parked in numerous UK army bases over the years (as a civilian) and have never been aware of this. There might be something specific for soldiers whose specific trade is driving but not in general car parks. Some younger soldiers join up without a license and pass a normal civilian driving test as part of their career progression (taught by civilian driving instructors IIRC).
Cameras are a mixed blessing. On the one hand these people are getting a better view, on the other even more people have gotten lazy.
It's a habit you quickly forget. You're just walking away waiting for the beep. No beep, you have to press the fob.
I do also hate when dealers advertise the backup camera as a security feature. It's mandatory, you don't advertise seatbelts or airbags (unless there are 37 like in a modern Mercedes).
Their argument for it was basically the same as the Army’s — with so many people working for them it became significant enough where it prevented a tangible number of people getting injured.
The other argument was that if you were getting attacked / mugged you could get away faster!
If there's a narrow parking space with a narrow aisle in front of it then forward-parking is basically impossible so you have to reverse-park, so it's a skill worth having.
That I have more visibility is just a bonus, but not the main reason.