Exactly. Herein lies the confusion and the need for reminder.
IAW para 1(a) a military ATZ is active at the notified times (almost always H24) whether or not the ATSU is manned. This means it differs from 1(b) and 1(c) which is why para 1(a) is there in the first place.
I learned to fly at a normal civil airfield but I learned this doing Air Law. When I moved to a club at a military airfield I discovered not everyone had done the same. It's not something we at the club or RAF have made up...
Tim