Army composition of the 3rd century crisis?

[Robert Vermaat]

Hi Jens,

Miks points out that the fully developed Intercisa helmet from Augst was found in a context which would also imply a 280s AD dating (the city was apparently destroyed then), but this was later explained away by a possible later presence of troops passing through the ruins.

I must say I'm not convinced by either explanation. The helmet was found in part of a wall I think, which would perhaps be better explained by the wall being (partly) ruined, but it's no proof. The best (at least most honest!) arachaeological qualification should perhaps be "Undated, possibly late 3rd to 4th century AD".