Liberty Observer Group, otherwise referred to as Liberty Observer was a special patrol unit was based around the solar system, and served under the Tactical Space Corps. During the early phases of the Second Robotech War, the Liberty Observer Group received a mayday from Space Station Liberty. As the unit moves to investigate, they were attacked by the then-approaching cityships of the Robotech Masters. The survivors were later relieved by a task force under Marie Crystal, forcing the Masters ships to back off from their offensive. It would be a short time later, before the Masters began bombardment of key United Earth Forces facilities like Moon Base Luna, and an orbital drydock.
- The unit's insignia was taken from the real-life 322d Training Squadron.