EarthCom (officially short for Earthen Command) is the collective name for the armed services of the United Earth Federation. EarthCom consists of several branches, including the Fleet, Ground Forces and the Marines, each with their own set of ranks and insignia. When joining the completely voluntary EarthCom, soldiers must do at least one tour of duty lasting no shorter than 6 months. When soldiers decide to not "go career," they can retire at any time. Joining EarthCom has significant rewards for soldiers - after their tour of duty, the Federation will pay all fees coupled with further education, among others.