Assassins' factions are organized groups that focus on covert operations, often involving targeted killings or espionage. These factions can vary in ideology, methods, and goals, ranging from political motivations to personal vendettas. They often operate in secrecy and may have a code of conduct that guides their actions. Historically, one of the most famous assassins' factions is the Hashshashin, a medieval group known for their strategic assassinations during the Crusades. In modern contexts, various criminal organizations and rogue agents can also be considered assassins' factions, utilizing advanced technology and tactics to achieve their objectives.