Troops in Rome, AD408-410?

[Flavivs Aetivs]

There are 5 legions, 12 A. Palatina, and 3 Pseudocomitatenses, plus the Valentinianenses (possibly Valentinianenses Iuniores from Gaul) and the Catarienses (probably Pseudocomitatenses listed under the Dux Pannonia.)

Five Banda could easily have been these 5 Legions, and is probably the basis for such hypothesis as you mentioned above.

Tertiani (ie. Tertiani Italica, a legio comitatenses unit)
Tertia Herculea (a legio comitatenses unit)
Pacatianenses (a legio comitatenses unit)
Mauri cetrati (a legio comitatenses unit)
Propugnatores iuniores (a legio comitatenses unit)

Presumably these were the units destroyed.

Ueda Sarson suggests that " The forces given above rather seem to bear the hallmarks of being the forces that took finally over Illyricum under Guneridus in 409 AD after Stilicho's death."

The Illyrian Command was established in 409, and if Guneridus took command in that year it would coincide with the defection of Valens who must have been Comes Illyricum just prior.