By the second century all non-Italian Roman military veterans received imperial citizenship.

Evidence

By around the end of the first century the majority of ‘Roman’ soldiers were non-Italian, and by the second century they were all being rewarded on discharge with Roman citizenship for themselves and their children. — Stephen Kershaw, A Brief History of the Roman Empire, 414

Categorization

• corroborated: 2 independent passages support this claim — Stephen Kershaw, A Brief History of the Roman Empire, 414