The United Star Corps is the protagonist of the RPG. They are protecting the human race as well as the galaxy from the Syn invaders. They are a military organization that has not only a legistrator, but a senate. The president is currently FADM Jogar.
The Government of the United Star Corps is run by the military. It is a military democracy in which the highest ranking officers of the military are voted as the leaders of the United Star Corps. While there is a civilian president, he reports to the Military during a time of war, otherwise it is the opposite.
The government is set up in a way that the military during wartime has unlimited resources, but they do not have the power to overthrow the government and install a new one. This was created to prevent military dictatorships, but that doesn't mean it won't happen it just means its much harder. For a full government reform it will require nearly 75% of the USC Legistrator and Senate to allow a government reform. In the event of a military coup the military will most definitely be fighting themselves as the Militias must act to fight for democracy.