Second Galactic War

The Second Galactic War was a galaxy-wide conflict that began sometime in 2067 and ended in 2254. The galactic population considers the conflict to be the longest and deadliest war to occur. It was mainly fought between the Eclipse Empire and a joint alliance consisting of the Opposition and Korma Empire; the latter having fought against the Eclipse Empire in two previous conflicts. The Opposition fought for equal rights while the Korma Empire sought to avenge their Emperor. Galactic Rebel groups also fought in the conflict, clashes between human and non-human groups were common. Various Insurrectionists, Resistances and Rebel factions also took part in the war, though they targeted only the Eclipse Empire, occasionally attacking the Opposition and Kormans if they got in the way.

In 2142, the Korma Empire had been defeated during the Korman Offensive; spearheaded by the Veloka Defense Forces. It was this defeat that the war reached a stalemate, though small skirmishes between Eclipse Empire and Opposition forces did occur, but did not escalate the war back into full confrontation.

The Battle for Harmony
11 months after the Second Galactic War began, the Opposition launched an attack on the human colony Harmony with the support of an alien-led Galactic Rebel fleet. Initially, the Harmony Fleet was able to hold its own against the Opposition warfleet but eventually was beaten and the majority of its ships were destroyed. However, before defeat, the Defense Fleet's commanding officer Admiral Steven Duke was able to contact Grand Admiral Jane Jenkins who sends a reaction force consisting of ships from the nearby Mars and Zerah Fleets to assist them.

Over a day after the Harmony Fleet was destroyed and its survivors taken prisoner, the reaction force sent by Grand Admiral Jenkins arrives over Harmony and immediately detects incoming distress signals from the planet's surface that local Eclipse Planetary Guard forces were still fighting against the Opposition ground forces. The reaction force's commanding officer Admiral Marcus Zane orders his forces to attack the Opposition warfleet and clear the way for their ground forces to reinforce the Planetary Guard.

Stalemate
In 2142 after the Korman Offensive was undertaken by a joint Navy-Army force, the war came to a stalemate when the Opposition ordered a ceasefire to all of its military forces and informed the Eclipse Empire. The Presidency Council also sent a ceasefire to its military in response to the Opposition supposed surrender, however this was not the case as the Opposition instead revealed that there was no surrender but rather a hold. Eclipse High Command saw this course of action merely as fear due to the defeat of the Korma Empire, which High Command saw as the Opposition's main motivation to fight.

Aftermath
In 2254, both the Eclipse Empire and Opposition came to a peace agreement, signing the Harmony Accords and brought the conflict to an end. The Empire also reorganized into the Federation, and restructured its executive and military administrations.

The Accords outlined that non-humans would receive the same privileges as humans on all human colonies, which there were on almost every planet in the galaxy including those controlled by non-human governments as a result of enforced law.

As the Opposition disbanded their military, many of their administration were unhappy of the outcome and numerous Opposition remnants remained active in the following years; starting the Civil Wars period.