Auxilia shields what options are there?

[Peroni]

As Christian kindly posted, I have written a short article on the shield shapes of the Roman auxiliary soldier. This is by no means exhaustive!( http://www.romanarmy.net/artshields.htm )

(As is, I´m still missing a group of mid 1stc. AD Legionaries with oval shields... )

It's coming! one of the UK groups is planning to completely re-equip with shields reconstructed from the Caerleon shield cover remains!

I am also currieus where the famous batavian oval green shield design comes from? You know what I mean with the yellow painting.

It is taken from Trajan's Column... But a very similar design is seen on a grave altar of a Batavian quartermaster. We used green and yellow because our group's tunics were already green and our focale yellow. (not because of Connolly's painting!)