Sextus Julius Frontinus

Active in the late 1st century CE, Frontinus built a distinguished public career under the Roman emperors and is thought to have died around 103 or 104 CE. He served as governor of Roman Britain and later held the important post of water commissioner at Rome, where he oversaw the city’s aqueduct system.

He is especially known for two surviving works. Strategemata gathers examples of military tactics and leadership, while De aquaeductu urbis Romae explains how Rome’s aqueducts functioned and what was needed to manage them properly. Together, these books show a writer interested less in grand rhetoric than in clear, useful knowledge.

That practical tone is a big part of his appeal today. Whether writing about war or public infrastructure, he comes across as observant, orderly, and deeply concerned with how things work in the real world.