What unit from the Roman Army consisting of centuries enjoyed more prestige than the Roman navy?
Roman navy The Roman navy (Latin: "Classis" , lit. "fleet") comprised the naval forces of the Ancient Roman state. The navy was instrumental in the Roman conquest of the Mediterranean basin, but it never enjoyed the prestige of the Roman legions. Throughout their history, the Romans remained a primarily land-based people and relied partially on their more nautically inclined subjects, such as the Greeks and the Egyptians, to build their ships. Because of that, the navy was never completely embraced by the Roman state, and deemed somewhat "un-Roman".
Political history of the Roman military Rome's military was always tightly keyed to its political system. In the Roman kingdom the social standing of a person impacted both his political and military roles. The political system was from an early date based upon competition within the ruling elite. Senators in the Republic competed fiercely for public office, the most coveted of which was the post of Consul. Two were elected each year to head the government of the state, and would be assigned a consular army and an area in which to campaign. From Gaius Marius and Sulla onwards, control of the army began to be tied into the political ambitions of individuals, leading to the political triumvirate of the 1st century BC and its military resolution. The late Republic and Empire was increasingly plagued by usurpations led by or supported by the military, leading to the crisis of the third century in the late empire.