The fall of the roman military power

[Aryaman2]

I think that sinking tax revenues also had something to do with it. We see sinking population levels, marginal agricultural areas being left. recent claims of reforestation have been refuted at least for Britain, but in the Lower Rhine area we see most people have left due to rising sea levels and colder temperatures.

I'm not sure if rising equipment costs were crippling the state finances (but state production control (fabricae) and less complicated equipment may point in that direction. I never read evidence about it, but it is generally accepted among archaeologists that federates and temporary allies were sometimes (often?) equipped with Roman arms & armour.

I have read also about sinking tax revenues, but as a consequence of Honestiores avoiding taxes rather than a general declive in economic output, although one does not exclude the other