"Many decades ago, mankind conquered the stars. With the development of advanced space craft, new worlds and intelligent life-forms were discovered within and beyond the Solar system. However, space travel was restricted to military personnel and scientists despite its conveniences.
In 2035AD, they decided to unify all life-forms in outer space, but an interplanetary war started in 2041AD, with Earth involved.
In 2044AD, Galactic Command (GALCOM) was formed to maintain law and order amongst planets. The Gammulan race opposed the alliance and war was waged between GALCOM and Gammulans.
In 3000AD, player was recruited to defend the GALCOM consortium of planets against Gammulans. At 02:34:22 intergalactic time, A GALCOM diplomatic craft developed a navigational malfunction and strayed into Gammulan territory. GALCOM supreme commander Stranix reported a Sphinx class battlecruiser was intentionally destroyed by Gammulan orbital defence system, with no survivors. Meanwhile, a team of Renegade class interceptors ambushed a Gammulan starfighter in GALCOM sector 04:66-B."
Source: Wikipedia, "Battlecruiser_3000AD," available under the CC-BY-SA License.