The definitions of the groups Duty and Freedom

[Sharrock]

Freedom

Freedom: Originally, the founder of this faction and the founder of the Duty's faction were friends, but later their vision for the future of the Zone greatly differed from each other, leading them and their followers to wage war against each other. While Duty restricts the Zone from the outsiders, Freedom aims for the opposite; basically Freedom wishes the outer world to be allowed freely into the Zone, also using the artifacts as they wish. They also believe in studying the zone. Freedom isn't very organized; they only have a sort of duty distribution which enables everyone to do what they are good at.

Duty

Duty: A group of dedicated soldiers and soldier wannabes which are under command structure of a military hierarchy. Being the most organized and fundamental group in the Zone, they are trying to prevent the Zone from spreading, and waging a "crusader" like war against mutants and other factions that have bad intentions. They also train, accomplish day and night watch duties, patrol their territory, and they also do research about the Zone, mainly about how to end it. They are allied with the scientists, and are rumored to be neutral towards the Army (but Army are hostile towards the Duty). They continuously clash with Freedom.