Battle of Kadesh Orbit

Prelude
Following the Battle of Koba, the joint Federation/Romulan fleet moved towards Kadesh, where the ex-T'Seren, ex-Miracht and ex-Terrh had been detected in orbit. What they found however, was a Biophage fleet that outnumbered them more than twice over, with the ex-T'Seren itself heavily modified and upgraded since it was last seen. Despite the unfavorable odds, letting the Biophage consume the garden world of Kadesh and all the resources it held was seen as unacceptable, forcing Captain ka’Sharren to give the order for the joint fleet to advance in an attempt to inflict as much damage as they could while hoping for the best.

The sudden appearance of Klingon reinforcements at the last minute before the fighting began was of great surprise to all. Rear Admiral Sulu, who had been dispatched on an unsanctioned mission by Admiral Vitalia Kahurangi to the Klingon Empire, had managed to enlist their aid in the fight against the Biophage. With the Klingon ships balancing the numbers, the allied forces moved to engage with much greater confidence.

The Battle
Despite the appearance of the Klingons to bolster the joint fleet, the opening phase of the battle favored the Biophage forces. The infected ships fought fiercely, landing almost twice as many hits as the joint fleet managed in the same time. This was balanced out by the allied ship's superior technology, their shields allowing them to absorb hits while holding their own. This was most clearly seen with the first casualty of the battle, an ex-Kadeshi Frigate destroyed in single shot by the USS Courageous.

Fire continued to be traded between the two fleets as the battle went on, with the Biophage forces holding the slight advantage in the exchange. However, combat had begun to take its toil among the allied forces, especially their lighter ships, with several of them having lost shields by now. The fighting intensified at this point, with 2 Klingon Birds of Prey, the USS Centaur, 6 ex-Kadeshi Frigates and 1 ex-Kadeshi Cruiser eliminated in quick succession.

By now the engagement between the two fleets began to even out, with the combatants trading punch for punch. While several allied ships have lost shields and started to take hull damage, with a Romulan Bird of Prey destroyed in the process, the Biophage fared no better with five of their frigates destroyed and their heavier vessels suffering several hits and accumulating hull damage.

With the first of the ex-Kadeshi motherships disabled by a shot from the USS Yukikaze, the tide started to distinctly shift in favor of the allied forces. Though both the last Romulan Bird of Prey and a Klingon Ktinga would be disabled, the infected ships were in turn savaged, with another mothership and three of their cruisers disabled rapidly one after another. The momentum of the joint fleet's assault rapidly built as they pressed the advantage and tore into the remaining Biophage ships.

While another Ktinga ended up disabled and a Klingon Bird of Prey destroyed, it wasn't enough to stop the USS Enterprise from taking out both the last mothership and the ex-Miracht one after another, or from a Ktinga disabling the ex-T'Seren or the destruction of the ex-Terrh by the USS Courageous. The rest of the infected ships are wiped out soon after as well, though in a rather spiteful strike, the last Biophage vessel landed a direct hit on the damaged USS Sarek, killing dozens of the crew before the Federation explorer returned the favor and destroyed the ex-Kadeshi frigate, signalling the end of the battle.

Aftermath
With all the enemy forces wiped out, the surviving Kadeshi ships reentered orbit of their homeworld, burning everything to eliminate the Biophage and as a funeral for their dead. The joint fleet in the meanwhile, collected their wounded and dead before returning home.

While the state of emergency would yet to be declared over as cleanup work continued, the Battle of Kadesh Orbit would be considered the climax of the Biophage Crisis, the destruction of the Biophage fleet eliminating the most pressing threat against the Federation and Romulan Empire while work on a vaccine rapidly nearing completion.