Legions of Trajans Dacian wars

[marcus ulpius quadratus]

Salve omnes

Thank you to all the contributors for excellent posts

'THE ROMAN LEGIONS' by H.M.D.PARKER says

The confusion created by domitians reverse on the danube, and the continued threatening unrest or Decebalus, called for fresh roman campaign. The danger was great enough to induce the Princeps to increase the army of Rome to 30 Legions, and the new legion called XXX Ulpia was sent to the danube district.

So can we 'assume' that the II Traiana had previously been created for 30 Legions to be in existence?

Also PARKER goes on to say

Trajan had a force of 12 Legions for the dacian campaign

We cannot trace in detail the part played by the individual Legions in the two Dacian wars; in the two campaigns only five can be definitely shown from distinctions conferred upon them, I Italica, IV Flavia Felix, V Macedonica, VII Claudia and perhaps the XIII Gemina 'corpus inscriptiuonum latinarum'

Is it arguable that the I Adiutrix had been present during or shortly after the termination of the second war, if the correct restoration of a 'tegula' at Apulum
is

'Leg XIII Gem et I Adi'

Please share your thoughts and doubts
Valete omnes
Quadratus