Goths: Moving Whole Populations

[Thiudareiks Flavius]

. Burns, Delbrück, Grabriel&Boose, Nicasie settle near a figure of 75.000 for all the confederacy, including wariors

I totally agree with Robert. It's most likely Fritgern had 20-25,000 warriors at Adrianople. This is including the allied Greuthungian, Taifalian, Sarmatian and Hunnic cavalry under Altheus and Saphrax. Given that Fritigern's Tervingian Goths had their backs to the wall and his force would have included all able-bodied men, this gives approximately 75-100,000 Goths overall, with the lower number being more likely.

That fits with the fact that many Goths stayed north of the frontier with Athanaric, the numbers Thrace could sustain and the troop numbers that faced Valens. Even this number was a massive strain on the Eastern Empire's resources, so any higher figure is getting towards fantasy.