The European Space Marine Corps is the European Union's Space Defence Force. Their Allies are US Colonial Marines and the Japanese Space Marines. The European Space Marines have fought and won Defensive wars against their Russian and Chinese Counterparts.
Some time in July of 2008 the European Union decided that it needed to Defend its Orbital Colonies and other Orbiting Space installations from foreign Aggression. By the year 2023 this Military Organisation had Accomplished the following. Defeated the Chinese and Russians and Won the Battle of Tannhauser Gate. Resulting in a Allied Victory. The Americans would also go on to win the Battle of the ISS ,and the Tannhauser gate by the year 2023 as well.