Gundam Iron Blooded Orphans

Mobile Suit Gundam: Iron-Blooded Orphans (Japanese: 機動戦士ガンダム 鉄血のオルフェンズ Hepburn: Kidō Senshi Gandamu Tekketsu no Orufenzu?), also referred to as G-Tekketsu (Gの鉄血), is a 2015 Japanese mecha anime series and the fourteenth installment in Sunrise's long-running Gundam franchise. The series follows the exploits of a group of child/teenage soldiers who establish their own security company after rebelling against the adults who used to abuse them on a futuristic, terraformed Mars. Read more here.

Super Robot Wars DRP
In Super Robot Wars DRP there were two calamitous wars within the solar system, the first was the Calamity War, which was the chaos that followed the coming of the Zentraedi almost a hundred years ago.

Gjallarhorn was founded to address the peacekeeping of the solar system, using their legendary 'Gundams' to achieve this. Their success and popularity led them to became a recognized agency by NUNS.

After the peace with the Zentraedi, and humanity's initial expansion beyond the solar system, there was a relatively long peace in the solar system. This led the 'Gundams' to be kept away, as the peacekeeping force found no reason to field them. Some of them would end up in destitute colonies and mars.

However, Gjallarhorn became a corrupt entity, working with the Economic Blocs to oppress the colonists surrounding earth, and even the poor on earth. (The middle east) Eventually they became too mired in politics that they had become ineffectual when the economic blocs began to butt heads once more.

Certain families and members became concerned that Gjallarhorn had forgotten its original duties, and thus helped establish Celestial Being. They gathered the best and brightest scientists from throughout N.U.N.S. and secretly began to develop the 'Gundams' of legend once more.

The Solar Wars that followed from the Second Impact were a cataclysmic enough to affect the entire solar system. During this time, the Alaya-Vijnaya system was an experimental control system that was 'leaked' to the underground private military contractors of Mars and the surrounding colonies. Nominally it is banned, but as Gjallarhorn has become corrupt and ineffectual, the poor colonists and bandits within the system are seen using them.

Mars has been relatively left behind in terms of economic value, its lands and properties carved up among the economic blocs of Earth. Recently, it has become more like a port before leaving the Solar System (most likely for Planet Jerra or the Brisingr Sector) and many people languish in poverty. There is a rising frustration that it shares with the colonies against the economic blocs of earth (particularly OZ).