Pompey's campaign against the pirates

Pompey's campaign against the pirates represented the final phase of the Roman Republic's efforts to combat piracy in the eastern Mediterranean, which had been adversely affecting the eastern Roman provinces. This campaign was completed in approximately 40 days under the command of Pompey in 67 B.C. The pirates no longer sailed in small groups, but in large hosts, and they had their own commanders, who increased their fame [by their exploits].

Source: Wikipedia — Pompey's campaign against the pirates (CC BY-SA 4.0)