Tirrinough

A powerful fortress world within both the Human Federation and Human Imperial Alliance, Tirrinough was one of the most important planets in both human governments, due to both it's location between the Terra System and the Western portion of the Galactic Mass, and the large industrial base of the planet was able to support the powerful military of both the Human Federation and the Human Imperial Alliance.

The planet would be invaded at the height of the First Lauresh War by the Human Federation in a last bid attempt to gain the military resources that Tirrinough withheld during the beginning of the world. However, the Federation would be defeated by the Lauresh Imperium before it could successfully recapture the planet. For the next seven centuries, the planet of Tirrinough would remain independent, ruling it's system and defending itself from the Lauresh forces within the Burridaca Subsector, before Karvan the Uniter would arrive in 3,417, and the planet would officially join the Human Imperial Alliance, becoming an important fortress world defending the Burridaca Subsector and the Terra Subsector from threats in the Western region of the Human Imperial Alliance.

Pre-Federation
Tirrinough was discovered sometime before the Human Federation was founded, but it would not be populated until the later years of the Federation.

First Lauresh War
After an increase in tensions between the Human Federation and the Lauresh Imperium over the Burridaca Subsector, Tirrinough would be selected as the Federation's forward operations base of the Subsector. In the year 2,641, Military intelligence, gathered by scouts located in the Subsector, had alerted the Federation's Secretary of Warfare as to the superior technology of the Lauresh Military, and that when war broke out, only a surprise attack by Humanity would have any chance of a positive outcome for the Federation. The Secretary would immediately order fleets to the rallying planet of Tirrinough, in order to prepare for the attack.

However, the Lauresh had detected the military buildup over the past months, their superior technology revealing the increase in movements between real space and the Horizon Plane over Tirrinough. Seeing the large movements of material to a Human planet within the Burridaca Subsector, the Lauresh leaders ordered an immediate attack on the Federation, and in 2,642, the fleets of the Lauresh Imperium would flood the Federation's Frontier worlds.

When the war took a turn for the worse, and Federation forces began to crumble beneath the Lauresh invasion, the Federation would order the Tirrinough government to release the vessels it had under it's command for use in the wider defense of mankind, as well as returning all ships that were ordered there to prepare to attack the Lauresh back to their staging ground in the Terra System. Realizing this would leave their own planet defenseless and a prime target for the Lauresh, the planetary government refused. The Federation, it's army and navy pushed to the limits, would conference on Earth, with the Secretary of Warfare ordering the immediate invasion of Tirrinough using anything the Federation had available, including previously mothballed fleets sent for scrap.

Federation forces would exit the Horizon Plane within the Tirrinough System in 2,644, and immediately prepare a siege of the planet. Tirrinough, being the Federation's forward operations base within the Burridaca Subsector, was well defended, with all the resources to protect itself in the event of a Lauresh invasion. When Federation ships began exiting the Horizon Plane above the atmosphere of Tirrinough, the planet's defensive mechanisms were given the order to fire. Orbital Defense platforms, defensive fleets, and ground-based weaponry would immediately open fire on the Federation ships, whose weapon systems were still inoperable, due to the interference in electrical systems caused by the Horizon Plane.

Seeing that the Federation forces stationed on the planet had allied themselves with Tirrinough rather than the Federation as was predicted, the invading force suffered heavy losses. Seeing the large amounts of unoccupied warships still sitting in drydock, waiting to be recaptured and once again support the war effort against the Lauresh, who were making large gains despite fierce Federation resistance, the invaders pushed on, eventually securing the Gateway Station and preparing to break the defensive lines and land on the planet. Over the next 2 weeks, the battle continued, as the well entrenched Tirrinough forces ensured that for every Tirrinough ship destroyed, four Federation vessels became burning hulls around it. When Federation forces finally had created a breach in the defensive ring and had established a beachhead on the planet's surface, the invasion force had been worn down significantly. Skeleton and automated crews had ensured that almost all of the Federation vessels in storage and drydock had been taken to the far side of the system, safe from the invading forces. The ground war on Tirrinough was looking to be even more of a challenge, as the defenders had fortified the area surrounding the Federation beachhead, resulting in limited progress and a very high casualty rate for the invaders.

Eventually, the Federation would pull out, ordering all it's ships back to Earth to defend the Terra System from the Lauresh, who had finally reached the heart of the Federation. However, when word of the collapse of the defense of the Terra System reached the remaining Federation forces currently stationed in defense of the system's Gateway Station, the current commanding officer officially surrendered to Tirrinough and would begin working with the planet's military to rebuild it's defenses and attempt to stop the inevitable invasion of the only human threat in the Burridaca Subsector.

Independent Years
The attack never came. The Lauresh Imperium would face an invasion itself from one of it's neighboring powers after the conquering of Earth, and all Lauresh forces would be pulled out from human dominated sectors, while mankind survived, no force remained to threaten Lauresh grip on power in the Southwestern expanse of the Galactic Mass.