The First Interstellar Federation is a nation located within Pulaski's Galaxy. Formerly controlling the majority of the galaxy, it has been reduced to just a handful of small systems on the outer reaches of the galaxy after being defeated by rebels, who then formed the rival Second Interstellar Federation.
Although it was at one point a Republic, Admiral Dak Kanthor has achieved prominence as the warlord leader of the Federation after the loss of the Core Systems. Admiral Kanthor is believed to have his headquarters currently stationed at Bastion Moon.
Admiral Kanthor has pledged that the "rebel scum" will one day be defeated and that the rump government will return to its rightful place in Capitol Center. The reality though says otherwise. The Federal Navy has been crippled and has lost at least 3 quarters of its capacity, and many ships that it does have been damaged.