Ages Of the Federation is a new series of total conversions to Sins Of A Solar Empire: Rebellion starting with "The Four Years War". The first mod in the series takes place between the Enterprise and Original series eras, focusing on the conflict between the early Federation and Klingon Empire. A Resurgent Romulan Star Empire, angry and still licking its wounds after its defeat to the federations waits in the shadows, ready to take advantage of a misstep by either the warring powers.
2241: USS Xenophon and her battlegroup ambush a Klingon strike force at Cygnus III. Morale plummetted across the fleet as time went on. Garth, along with many other captains, chafed under Starfleet's orders that there would be no large scale offensive action taken against the Klingons until more effective countermeasures could be deployed. Starfleet desperately needed a victory, but could not risk wasting ships and lives in another doomed counterattack. Nevertheless, even though he couldn't hope to match the Klingons in the open, Garth planned to strike a blow for the Federation. Leaving half his battlegroup exposed as bait and hiding the other half in the stormy atmosphere of the gas giant Cygnus III, Garth ambushed and destroyed a force of eight Klingon warships - severely weakening Klingon forces in the sector and winning the Federation's first significant victory of the Four Years War.