The Roman Army of Diocletian

[Robert Vermaat]

Surely that is Adrian's point that, between the reign of Diocletian and the compilation of the Notitia, a number of units that might otherwise have appeared on the list were lost in battle, Adrianople being a major example.

I understand that, but I don't understand why that would make the Notitia Dignitatum a problem. They did not make the list, period. It's the units that we know should be there but aren't which make it problematic.