[xeromal]

Partially, I'd say. It's been a while since I've read about it, but martial law is a suspension of normal restrictions on police actions. I'm not sure if there are other pieces involved.

A roman dictator on the other hand was anointed by the Senate to "get shit done" until the scourge was over or 6 months, whichever comes first. Normally in Roman times, they tended to shy away from single authority. Even the military was divided between two consuls so that if one got any funny ideas, the other could effectively repel their attack. During a dictatorship though, the anointed would have supreme authority over all things Roman. They could wield armies and the state coffers at their disclosure. This rarely happened and the senate really tried to only anoint people that were worthy of it.

Cincinatti, the capital of Ohio, is actually named after https://en.wikipedia.org/wiki/Lucius_Quinctius_Cincinnatus who famously saved Rome twice. He was farming when he was anointed dictator and was very reluctant to stay in politics unless needed. It's a fantastic story.