: The army moved from a civic body of citizen-soldiers to a professional force increasingly reliant on foreign volunteers and foederati (allies).
Modern historians often challenge the idea that "barbarization" was the sole cause of Rome's fall.
: Critics at the time, like the historian Vegetius, argued this led to a decline in traditional Roman training and values , such as loyalty and strict drill.
The most common focus is the "barbarization of the army." As the Roman Empire expanded and faced internal crises, it struggled to recruit enough Italian-born citizens.
Here is a structured overview of what a high-quality post on the topic usually covers: 1. The Military Shift: From Citizens to Mercenaries
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