Europa Whirlwind

The Europa Whirlwind was a sustained attrition campaign by the Frieden movement against UNSC space forces operating in and around Jovian Space. From June 2166 to September 2167, Frieden forces conducted hundreds of sorties from the Jovian Trojans against UNSC forces, focusing their efforts on destroying or damaging cargo ships and transports. The UNSC suffered heavy ship losses during the Whirlwind, but Frieden forces were unable to prevent the UNSC from deploying massive forces to Europa and besieging the Frieden heartland. By September 2167, Frieden space forces were depleted and withdrew once more to the Jovian Trojans. 
Matched only by the Battle of the Belt for longevity, the Europa Whirlwind was one of the costliest campaigns of the Interplanetary War. In 2166 and 2167, the UNSC Navy lost 96 warships: 9 carriers, 6 cruisers, 2 avisos, 51 destroyers, 2 frigates, and 26 sloops. 
==UNSC losses==
===2166===
UNSC losses near Europa in 2166 numbered 78 spaceships destroyed or damaged beyond repair: 4 carriers, 1 light cruiser, 25 destroyers, 33 cargo ships, 1 repair ship, 4 replenishment ships, 1 salvage ship, 6 transport ships, and 3 troopships. 
*UNSC Allied Coordination, Allied cargo ship (destroyed)
*UNSC AME Protectorate, AME500 freighter (destroyed)
*UNSC Anabelle Fonseca, Anders Heavy freighter (destroyed)
*UNSC Australia, troopship (destroyed)
*UNSC Black Eagle, F2110 freighter (destroyed)
*UNSC Bon-Adrien Jeannot de Moncey, Napoleon Bonaparte-class heavy cargo ship (damaged beyond repair)
*UNSC Bordeaux, Bordeaux-class heavy destroyer (damaged beyond repair)
*UNSC Celestial Dream, Celestial Radiance-class light carrier (destroyed)
*UNSC Chilean Sea, Pacific replenishment ship (destroyed)
*UNSC Cloud Estate, SF2160 freighter (destroyed)
*UNSC CMS Henry IV, SF2160 freighter (damaged beyond repair)
*UNSC CMS Phalanx, F2156 freighter (destroyed)
*UNSC Daring, light destroyer (destroyed)
*UNSC Dealer's Choice, F2131 freighter (destroyed)
*UNSC Dragon's Hoard, SF2144 freighter (destroyed)
*UNSC Dresden, Berlin-class heavy destroyer (destroyed)
*UNSC Eilat, Alexandria-class light destroyer (damaged beyond repair)
*UNSC Empress of Callisto, Empress of Mars-class heavy carrier (damaged beyond repair)
*UNSC Example of Economic Reality, SF2160 freighter (destroyed)
*UNSC Firestorm, Firestorm-class assault carrier (damaged beyond repair)
*UNSC Fortuna Dream, OEL-44 Dream-class transport ship (damaged beyond repair)
*UNSC Frenchie, LF2159 light cargo ship (damaged beyond repair)
*UNSC Garden of Eden, SF2160 freighter (damaged beyond repair)
*UNSC Garland, F2156 freighter (destroyed)
*UNSC Garnet, Sapphire-class transport ship (damaged beyond repair)
*UNSC Gebze, Soldier-class light destroyer (damaged beyond repair)
*UNSC George Gordon, F2100B freighter (damaged beyond repair)
*UNSC Georgia, New York-class heavy destroyer (destroyed)
*UNSC Gladiolus, RY1320 transport ship (destroyed)
*UNSC Gulf of Bothnia, Baltic replenishment ship (destroyed)
*UNSC Heaven Lake, Kyoto-class light destroyer (destroyed)
*UNSC Henry the Black, SF2144-AJSI freighter (damaged beyond repair)
*UNSC Ikot Ekpene, Soldier-class light destroyer (damaged beyond repair)
*UNSC Iris, Ceres-class repair ship (damaged beyond repair)
*UNSC Ivory Maiden, C100 transport ship (damaged beyond repair)
*UNSC Jade Warrior, SF2128 freighter (destroyed)
*UNSC Kansas City, Halifax-class light destroyer (destroyed)
*UNSC Kara Kara, F2110 freighter (destroyed)
*UNSC Kediri, Soldier-class light destroyer (destroyed)
*UNSC Korea Strait, Pacific replenishment ship (destroyed)
*UNSC LFA Ranger, SF2128-LFA freighter (damaged beyond repair)
*UNSC Lunar Holiday, C100 transport ship (damaged beyond repair)
*UNSC Macedonia, Star Ventures 1336 troopship (damaged beyond repair)
*UNSC Mainz Way, SF2144 freighter (destroyed)
*UNSC Marjorie Annette Michaels, SF2144 freighter (damaged beyond repair)
*UNSC Melbourne, Halifax-class light destroyer (destroyed)
*UNSC Might and Mastery, salvage ship (destroyed)
*UNSC Natalie K., LF2161A high-speed light cargo ship (damaged beyond repair)
*UNSC New Orleans, Halifax-class light destroyer (destroyed)
*UNSC New South Wales, New York-class heavy destroyer (destroyed)
*UNSC Norfolk, Halifax-class light destroyer (destroyed)
*UNSC Nur-Sultan, Halifax-class light destroyer (destroyed)
*UNSC Otto the Red, SF2157-AJSI freighter (destroyed)
*UNSC Paris, Shanghai-class heavy destroyer (destroyed)
*UNSC Parthenope Dream, OEL-44 Dream-class transport ship (destroyed)
*UNSC Pierre Augerau, Napoleon Bonaparte-class heavy cargo ship (destroyed)
*UNSC Plateaux, Soldier-class light destroyer (destroyed)
*UNSC Quetzaltenango, Soldier-class light destroyer (destroyed)
*UNSC Rio de Janeiro, Rio de Janeiro-class super-heavy destroyer (damaged beyond repair)
*UNSC Rosario, Bordeaux-class heavy destroyer (destroyed)
*UNSC Sagittarius, OEL-58 Constellation-class troopship (destroyed)
*UNSC Sarajevo, Bordeaux-class heavy destroyer (destroyed)
*UNSC Samuel Anderson, SF2160 freighter (damaged beyond repair)
*UNSC Scotia Plate, Okhotsk Plate-class replenishment ship (destroyed)
*UNSC Sevastopol, Shanghai-class heavy destroyer (destroyed)
*UNSC Shearwater, F2131 freighter (destroyed)
*UNSC Solar Skimmer, LF2152 light cargo ship (destroyed)
*UNSC Solar Trader, SF2144 freighter (destroyed)
*UNSC Star Tiger, F2160 freighter (damaged beyond repair)
*UNSC Sword of the Frontier, Sword of the Frontier-class heavy cargo ship (destroyed)
*UNSC The Arrow of Gold, F2110 freighter (destroyed)
*UNSC Union, light cruiser (damaged beyond repair)
*UNSC Wellington, Halifax-class light destroyer (destroyed)
*UNSC Whirlwind, Whirlwind-class assault carrier (damaged beyond repair)
*UNSC Wiesbaden, Berlin-class heavy destroyer (destroyed)
*UNSC Youthful Mars, F2110 freighter (destroyed)
*UNSC Zealander's Revenge, SF2144 freighter (destroyed)
===2167===
UNSC losses near Europa in 2167 numbered 56 spaceships destroyed or damaged beyond repair: 2 carriers, 3 cruisers, 22 destroyers, 21 cargo ships, 1 combat support ship, 1 destroyer tender, 2 replenishment ships, 2 transport ships, and 2 troopships. 
*UNSC Aeolus, Aeolus-class troopship (damaged beyond repair)
*UNSC Allied Duty, Allied-class cargo ship (damaged beyond repair)
*UNSC Allied Virtue, Allied-class cargo ship (destroyed)
*UNSC Andre Massena, Napoleon Bonaparte-class heavy cargo ship (destroyed)
*UNSC AME Forthright, AME1000 heavy cargo ship (damaged beyond repair)
*UNSC Arizona Sunrise, F2131 freighter (damaged beyond repair)
*UNSC Banaadir, New York-class heavy destroyer (destroyed)
*UNSC Beijing, Shanghai-class heavy destroyer (destroyed)
*UNSC Bismarck, combat support ship (damaged beyond repair)
*UNSC British Empire, cargo ship (damaged beyond repair) 
*UNSC CMS Philippe Auguste, SF2160 cargo ship (destroyed)
*UNSC Condor, light cruiser (damaged beyond repair)
*UNSC Crossed Scimitars, SF2150 freighter (damaged beyond repair)
*UNSC Crystal, Sapphire-class transport ship (damaged beyond repair)
*UNSC Cyclone, Whirlwind-class assault carrier (damaged beyond repair)
*UNSC Ebony Shine, F2156 freighter (damaged beyond repair)
*UNSC Enterprise, heavy cruiser (damaged beyond repair)
*UNSC Essen, Berlin-class heavy destroyer (destroyed)
*UNSC Ethel Stone, F2110 freighter (destroyed)
*UNSC Hong Kong, Shanghai-class heavy destroyer (damaged beyond repair)
*UNSC Impetuous, Fearless-class assault carrier (damaged beyond repair)
*UNSC Java Sea, Pacific replenishment ship (destroyed)
*UNSC Jean-Baptiste Bessieres, Napoleon Bonaparte-class heavy cargo ship (destroyed)
*UNSC Maryland Industrialist, SF2150 freighter (damaged beyond repair)
*UNSC Missouri, New York-class heavy destroyer (destroyed)
*UNSC Nomad, SF2160 freighter (destroyed)
*UNSC Ocean Dynasty, SF2157 freighter (damaged beyond repair)
*UNSC Orion, OEL-58 Constellation-class troopship (damaged beyond repair)
*UNSC Pride of Baltimore, SF2128 freighter (damaged beyond repair)
*UNSC Rod of Power, SF2157 freighter (destroyed)
*UNSC Royal Thunder, SF2160 freighter (damaged beyond repair)
*UNSC Sarpedon, F2156-TR freighter (destroyed)
*UNSC Sea of Okhotsk, Pacific replenishment ship (destroyed)
*UNSC Singapore Nights, SF2150 freighter (damaged beyond repair)
*UNSC Song of Lamentation, Accordance-class light cruiser (damaged beyond repair)
*UNSC Tagus, Saint Lawrence-class destroyer tender (destroyed)
*UNSC Teucer, F2156-TR freighter (destroyed)
*UNSC Thetis Dream, OEL-44 Dream-class transport ship (destroyed)
*UNSC Trader Prince, SF2150 freighter (damaged beyond repair)
*UNSC Trieste, Rio de Janeiro-class super-heavy destroyer (damaged beyond repair)
*UNSC Venice, heavy destroyer (damaged beyond repair)
*UNSC Zurich, Shanghai-class heavy destroyer (destroyed)