From the introduction of Battlelords of the 23rd Century (7th Edition):
Battlelords takes place in the year 2282, and characters are citizens of Galactic Alliance, which spans large portions of the Milky Way. The Alliance is made up of over a dozen species, including Humans, who pool their resources to expand the Alliance and protect their citizens from the threats of the Arachnid hordes and the Atlantean nanite swarms.
The species of the Alliance are allied for many reasons, but that doesn’t mean they particularly like each other. Many of them have been at war with each other at some time in the past, and most of them view the other species as inferior to themselves in one way or another. To survive and thrive in the Battlelords universe, characters will have to overcome the speciesism and stereotypes that other Alliance species direct at their characters. Similarly, they will have to look past the biases their character may have against other species in order to work cooperatively and achieve their goals, whatever they may be.
The Alliance is a bureaucracy of monumental proportions. There’s a bureau or agency for everything. To complicate matters, the Eridani military aesthetic pervades much of the government and corporate structure within the Alliance. As a result, everyone has a rank, and there’s an acronym for everything. You’ll get used to it.