The Marian reforms standardize soldiers and logistics

Opening service to landless citizens required the state to provide weapons and armor, which encouraged standardization and reduced the number of private servants and suppliers accompanying the army. Marius also altered equipment such as the pilum and expected legionaries to carry more of their own load. A smaller baggage train made the force more flexible and faster on campaign. Wage-earning soldiers could remain in service and train longer than property-owning citizens eager to return home. The older distinctions among velites, hastati, principes, and triarii narrowed, while specialized skirmishing increasingly shifted toward auxiliary troops. The result was a more standardized standing force rather than a short-term levy organized around private wealth.