I think I must be missing something here. If the entries are all in alphabetical order, what do you need an entry number for?
No Phil, you haven't missed anything.
The brevet card as we love/loath/use at the present is out-dated in more than one area. One of these being the "Entry No." it is of virtually no use.
As is the "CTC DA" line. some folk might think they're in DAs - but from the info I've received DAs 'ceased to be' a couple of years ago.
It probably deserves a thread all of it's own, much of the info put on brevet cards - should only be done by the brevet card owner.
I'd be happy with just space for the rider's AUK number and the signature.
Other stuff is largely superfluous.
EDIT: Obviously the certified page and control boxes are required,