ExoSquad Flight Five: Echo Squad was one of several E-frame units in the Exofleet and was assigned to the heavy Exocarrier Resolute. Echo Squad was called into active duty in 2119 A.D. when the Homeworld Congress declared war on the Pirate Clans of Saturn. The Pirate Clans War was in response to Jonas Simbacca's Pirate Clan pillaging a civilian ore freighter, the Danube, which resulted in the death of one of its two crew members. The Resolute responded to the distress call from the Danube and launched a Boarding Party, led by Able Squad, to investigate the Danube wreckage. As a precautionary measure all other E-Frame Flight Groups, were to be held in reserve in case of a Pirate Ambush. In addition to the death of theDanube's crew member, an entire ExoFleet Work Crew was killed when a booby trap left by the Pirates was accidentally triggered.
Echo Squad served in all engagements in the Pirate Clan War including the Asteroid Belt Ambush and the Assault on Enceladus. In the first engagement of the brief conflict, the ExoFleet was ambushed by the entire Pirate Fleet using their Cloaking Devices to give them an advantage over the more powerful yet slow maneuvering ExoFleet. Although their surprise was absolute, the ExoFleet was able to fight off hordes of Pirate Fighters and battle their way out of the ambush.
The Pirate Clan War abruptly ended when the Neosapien Commonwealth surprise attacked and conquered the Homeworlds, violating their disarmament treaty they signed after the Neosapien Rebellion of 2069 A.D. In response, the ExoFleet turned its full attention to freeing the Homeworlds from Neosapien oppression. Baker Squad and Charlie Squads were completely lost in the Exofleet’s first engagement of the Second Neosapien War in attempt to liberate the Homeworlds. In a daring attack orchestrated by J.T. Marsh; Able, Baker and Charlie Squadrons charged the NeoSapien Flagship to enable the ExoFleet to retreat. Three E-Frames were lost between Baker and Charlie Squads in the attack on the Neosapien Flagship bridge alone. In addition, with the ExoFleet well into their retreat, Able, Baker and Charlie squadrons fled to Earth to escape the Neosapien fleet. With help of the resistance, Able Squad was able to return to the ExoFleet. Those seven remaining members of Baker and Charlie Squadrons who fled to Earth are still M.I.A.
Echo Squad served in all engagements in the Second Neosapien War including the First Assault on Earth, the GRAF Shield Sabotage, the Second Assault on Earth, the Io Blockade, the Diversion of Ceres, the Assault on Mercury, the Liberation of Venus and the Liberation of Earth. Echo Squad received notoriety in 2121 A.D. when they were a part of an E-Frame Task Force, led by Commander DeSoto that included Able Squad and Delta Squad, which was a Recon-and-Force Mission to Mars. Their mission was to locate a new massive underground Neosapien Weapons Complex on Mars based on The ExoFleet Spy Marduk, who had gone missing after handing over information on this Weapons Complex to ExoFleet. The mission was a trap, set up by Neosapien Spy Barca, and Delta and Echo Squads took heavy causalities. A retreat was called and all E-Frames returned to their ships. Delta and Echo Squads were assigned to the Avenger which was ultimately destroyed by Barca, killing Commander DeSoto along with the rest of Delta and Echo Squads. The Delta and Echo Squads are revived by the cloning technology.