The current year is 5,006 of the Common Era, approximately 2,500 years since the formation of the 'Human Republic'. Those years in the past are important, and their events shaped the future, and saved Humanity. In the early 2nd Millennium of the Common Era, the people of the Planet Earth, the Humans, had begun their backwards evolution. Their culture had become idiotic, and their people insane. Physical features of Humanity also seemed to be reversing back to their apish roots. The intelligent ones left began to fight for something better. They fought for a cure to this illness, so that they could decide their future, not nature. They eventually created and invented several types of advanced tech. By the middle of the 2nd Millennium, a group had finished their 'war of liberation', or war of conquest, depending on who you asked. They formed something new, the Human Republic, and their scientists had created tech that completely reversed the backwards evolution of Humanity. They had medical technology that increased Human lifespans to 180 years old, and prevented them from aging much until they were around 70 years old. They made Humans physically superior to their ancestors, and they made them far more intelligent.
Their technology only became greater, and their military stronger. Earth had eventually become an Ecumenopolis, and it had run out of room for its ever growing population. The Human Republic had Terraformed Planets in their own Solar System first. By the 3rd Millennium, however, they had Terraformed Planets all over the Milky Way Galaxy. New cities were constantly being built on newly habitable planets. Several alien species were even found, and they were integrated into the Human Republic as well. The military of the Human Republic continued to advance its Fleet with new ships, and they continued to better equip and enlarge their Army as well. Eventually, by the 4th Millennium, the Human Republic spanned the entire Milky Way Galaxy. Many Stars throughout the Milky Way Galaxy had also had technology made for them, to keep them preserved, so that they wouldn't die and kill off entire populations in the process. By the middle of the 4th Millenium the Human Republic had discovered something that would eventually be their greatest enemy. The Human Republic discovered the Redeelians, but other than knowing of their existence at the time, they paid little attention to them, as they were outside of the Milky Way Galaxy.
By the year 5,000 of the Common Era, the Human Republic had a military of great strength. The Soldiers of the Human Republic Army were equipped with Medium Weight Combat Armor and Laser Rifles. The Fleet was outfitted with mostly Corvettes and Frigates, with a few Destroyers and even fewer Dreadnoughts scattered about. However, they had many, many ships, and they were of decent quality. The Redeelians, who controlled a Galaxy of their own, as well as two Satellite Galaxies, operated their military a bit differently. They used mostly Destroyers, and didn't tend to use any sort of ship smaller than that, other than Fighters and Bombers, of course. Their Army Soldiers were outfitted with Padded Armor and Plasma Carbines. Their Soldiers were poorly trained, but they vastly outnumbered the Soldiers of the Human Republic. The Redeelians Government was not like the Human Republic, instead, it was an enslaving Redeelian Empire. They ruled through fear and tyranny.
In the year 5,002 of the Common Era, the Human Republic and Redeelian Empire came into contact. The Redeelian Empire almost immediately declared war on the Human Republic, and demanded their surrender and servitude. The Human Republic similarly declared war on the Redeelian Empire and also similarly demanded an unconditional surrender, however, they demanded the complete liberation of the lands the Redeelian Empire currently controlled as well. The war is still currently raging, with victories for both sides everywhere. The war most likely won't end anytime soon, but one can only hope.