Battle Strategy Meetings/Staff Meetings

[Frank]

... but are there any primary sources that set out the scenario that you describe?

I don't know of a single primary source covering the entire scenario. The famous "Manual of the Roman Army and Civil Administration" did most propably never exist.
Like usual it is a puzzle of hundreds of epigraphic and textual sources, which lead to a more or less reasonable conclusion and overall picture. In case of roman military administration the main sources are papyri, ostraka and tablets from Egypt, Africa, Dura and Vindolanda.

Brian Dobson simply reproduced the original essay, preceded by an update (in German).

I know Dobsons annotations. He critizises Domaszewski mainly, whenever he talks about the strategic background and the reasons for certain army structure and processes. The details about the structure itself are still pretty correct since 1905. But I hoped that a standard like Domaszewski was translated anytime.