This article explores ideas about stable-barracks, which have received much attention in recent provincial Roman archaeology. This renewed attention stems from new discoveries in Romania that prompt a re-evaluation of earlier conclusions. Geomagnetic investigations and subsequent excavations of the fort of the ala I Batavorum milliaria in Războieni-Cetate (Alba County) have shown that, contrary to prevailing opinion, stable-barracks could be considerably larger than similar buildings known from Great Britain and Germany. These findings suggest that a significant reconsideration of the concept of stable-barracks is required, along with an updated discussion about the normal troop strength of alae milliariae in the Roman army.

Geophysical survey at Llanfor, near Bala, revealed two temporary camps and a large wooden fort in exceptional detail. The camps are assumed to be evidence of an early Flavian invasion force. The fort, which contained a garrison that probably comprised a complete ala of auxiliary cavalry and a cohort of legionaries, is interpreted as a short-lived campaign base that existed during the transition between invasion and consolidated occupation. Parallels are drawn between Llanfor and similar forts in Britain and Germany.