: Felices theodosiani
Translation: 'The fortunate Theodosians'. Apparently they were heavy infantry. Why they were 'fortunate'? Well that's another story.
: Not pictured: petulantes seniores
:
: http://upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Petulantes_seniores_shield_pattern.svg/500px-Petulantes_seniores_shield_pattern.svg.png
How interesting. It seems the Brachiati Seniores (another senior western infantry unit) had the same design (but in green).
http://books.google.ie/books?id=ccgLIklIheAC&pg=PA15&dq=petulantes+seniores&hl=en&sa=X&ei=b5iaUKbhIs-1hAfd-4DADg&ved=0CDIQ6AEwAQ#v=onepage&q=petulantes%20seniores&f=false
Of course this is all probably connected to some great conspiracy dating back to Charlemagne, Clovis and the Merovingians. ;)
Cheers
Hamish